The relationship between Clarke Griffin and Bellamy Blake starts out antagonistic towards each other. In the beginning, Bellamy shows a great amount of animosity towards Clarke and considers her to be one of the "privileged" in the hierarchy the Ark created. Meanwhile, Clarke often disagrees with the decisions Bellamy makes. However, as season one goes on, their relationship develops into a partnership. Their partnership grows into a friendship filled with mutual respect and trust. They are both shown to care if the other lives or dies.
In Season Three, they have been separated and reunited 4 times. In "Wanheda (Part 2)", Bellamy finds Clarke, captive, but he is stabbed in the leg and she is taken away by Roan. In "Ye Who Enter Here", Bellamy arrives at Polis and finds Clarke there. He begs her to come back to Arkadia with him but she refuses so he leaves without her. In "Hakeldama", Clarke sneaks into Arkadia to confront Bellamy about his massacre of a Grounder army. He attempts to take her to Pike but she shock-lashes him and escapes. In "Nevermore", they are reunited once again and attempt to save Raven's life along with the help of the other Delinquents. In "Join or Die", Bellamy admits to Clarke that he was really angry at her for leaving and that he doesn't want to feel that way anymore.
They were working together for most of Season Four, but they separated in "We Will Rise" and reunited at the end of "DNR". In the season finale, "Praimfaya", Clarke told Bellamy to use his head and that he inspires people with his big heart. At the end, Bellamy had to decide to leave Clarke behind since she did not make it back to Becca's lab on time. Bellamy, along with six others, used Becca's rocket to go back to the Ark while Clarke remained on the ground. Bellamy assumed Clarke died in the death wave. In an epilogue scene, taking place six years later, it is revealed that Clarke has survived and has been trying to contact Bellamy using radio. Bellamy is unable to receive these messages, due to the atmospheric radiation that is blocking the radio signals, and he still believes Clarke to be dead. Clarke has been waiting for 2,199 days for Bellamy to respond and is wondering why the group has not come back to Earth.
In Season Five, Clarke and Bellamy reunite after the six years apart. In "Sleeping Giants", Bellamy learns that Clarke is alive. Madi and Bellamy arrive to Shallow Valley just when Diyoza is dragging Clarke outside to torture her. Bellamy asks Diyoza to spare Clarke's life or else all the 283 prisoners in the ship would die. To prove that he's not bluffing, he shows Diyoza a mug that he carried from the ship. Bellamy makes it clear that he would trade all those lives for just one - Clarke Griffin. That's how much she means to him. After the events of "Sic Semper Tyrannis", when Bellamy's plot had the Flame inserted into Madi and ended up with Clarke leaving Bellamy to die in Polis, their relationship is strained. In "Damocles (Part 2)", Clarke and Bellamy's friendship is restored after Madi convinces Bellamy to forgive Clarke by telling him about the radio calls.
In Season Six, Clarke makes amends with Bellamy for leaving him in Polis before she unwillingly becomes a host for Josephine Lightbourne. Bellamy starts to question Clarke's different behavior, after time and time again with Clarke not on the same page. He is the first one to discover Clarke's dead and is devastated by the news though Bellamy reluctantly agrees to use Clarke's murder to negotiate a deal with Russell Lightbourne instead of seeking revenge. After learning that Clarke is still alive, he is determined to get her back. He takes Josephine past the radiation shield to find Gabriel Santiago so that he can save Clarke. They finally reunite briefly in "What You Take With You" when Josephine relinquishes control to Clarke to escape execution. In "Matryoshka," Bellamy succeeds in getting Clarke to Gabriel to remove the Mind Drive, but she can't be revived after Josephine hangs on inside of Clarke. Unwilling to lose Clarke again, Bellamy desperately performs CPR on her, urging Clarke to fight. It is Bellamy's words that inspire Clarke to fight back and destroy Josephine for good, allowing Bellamy to revive her. The two share an emotional hug. Over the following episodes, Clarke and Bellamy work together again to defeat the Primes and save their friends, trying a less violent method per Monty's last wish for them to do better and to be the good guys. In "The Blood of Sanctum," after the conflict is over, Clarke seeks comfort in Bellamy over the loss of her mother and Bellamy reassures her that they did do better which he has to think matters.
In Season Seven, Clarke and Bellamy affirm that they are best friends. However, their friendship becomes strained when Bellamy betrays his friends and joins the Disciples. In "Blood Giant," the relationship ends when Clarke kills Bellamy after he refuses to relent, having completely dedicated himself to the cause. Both Echo and Octavia assure Clarke that the real Bellamy, who they felt was already dead, would've forgiven her for doing it.
In Pilot, Clarke meets Bellamy for the first time just after the Dropship lands on Earth. Bellamy tries to open up the door but Clarke objects stating that the air could be toxic. Bellamy tells her that if the air is toxic they will all die anyway. Clarke tries to formulate a reply but is interrupted by Octavia Blake calling out Bellamy's name.
When Clarke realizes they were dropped on the wrong mountain, she informs the rest of the 100 that they need to head for Mount Weather. Bellamy suggests Clarke and Wells go while the rest wait for them to return with supplies. Before she leaves, Clarke reveals that the wristbands transmit vital signs to the Ark. If the 100 take them off the Ark will think they are dead. This confession leads Bellamy on a mission to remove everyone's wristbands to make the Ark think Earth is not safe.
In Earth Skills, Clarke learns that Bellamy and his followers have been removing wristbands. Clarke blatantly, calls Bellamy and the rest of the 100 idiots. She explains that the 100 need those wristbands because, without them, they won't survive the Grounders on their own. Bellamy isn't convinced and states the 100 are stronger than she thinks. Bellamy declares that the Grounders should fear them and with a speech to the 100, they believe the same. When one volunteers to help Clarke rescue Jasper, she approaches Bellamy and convinces him to join the rescue party.
Later, Bellamy tells her the moment she takes the wristband off they can go rescue Jasper. Clarke tells Bellamy the only way the Ark is going to think she's dead is if she is dead. He calls her a "brave princess". Before things can escalate further, Finn interrupts the conversation stating Bellamy should get his own nickname.
When the group finds a strung up Jasper, Clarke triggers a pitfall and Bellamy instinctively grabs her arm, saving her. For a brief moment, Bellamy considers letting Clarke die so her wristband shut off. However, in the end, Bellamy helps pull Clarke to safety. Clarke and Bellamy stare at each other for a short moment. Clarke eventually turns her focus away from Bellamy and back onto saving Jasper. The two never mention it again.
After helping rescuing Jasper, Bellamy is shown trading wristbands for meat from the panther Wells shot. When Clarke sees members of the 100 taking off their wristbands for food, Clarke refuses to.
In Earth Kills, Bellamy wants to kill Jasper, believing that he will die soon anyway, but Clarke doesn't allow him to. Bellamy gives her a small bit of time, saying that if Jasper isn't better by then, he will kill him. Later, Clarke helps Bellamy mercy-kill Atom after he is exposed to the acid fog.
In Murphy's Law, Clarke tells Bellamy that Murphy was the one who killed Wells. Bellamy advises Clarke to keep her mouth closed, but she goes ahead and makes a scene anyway. The scene leads to Bellamy hanging Murphy, despite Clarke begging him not to. Once the real killer is revealed to be Charlotte, Bellamy and Clarke work together to protect her from Murphy. Charlotte later commits suicide because she doesn't want anyone else getting hurt because of her, and Bellamy beats Murphy until he almost dies, however, Clarke stops him. She banishes Murphy instead of allowing Bellamy to kill him.
In Twilight's Last Gleaming, Clarke learns why Bellamy needed the Ark citizens to think that he was dead. She also gets angry at him for destroying Raven's radio, and breaks up a fight between him and Raven. Later, they watch the flares together; the ones that Raven helped create in order to show the citizens of the Ark that Earth is survivable.
In His Sister's Keeper, Clarke stops Raven from attacking Bellamy. She later sees Bellamy return from his mission to find Octavia with an injured Finn, which worries Clarke.
In Contents Under Pressure, Clarke and Bellamy interrogate Lincoln. Since Finn is dying and in need of an antidote, Clarke allows Bellamy to torture Lincoln to get him to give it up. Bellamy later grabs Clarke's hand and tells her that who they are and who they need to be in order to survive are different things.
In Day Trip, Clarke and Bellamy both go searching for supplies, and both save each other's lives when attacked by Dax. Bellamy admits that he only went to find supplies because he was planning on running away, but Clarke encourages him to come back and face Jaha, the Chancellor who he had shot on the Ark. Clarke helps get Bellamy pardoned of his crimes.
In Unity Day, The pair celebrate Unity Day together, and later on, Clarke asks Bellamy to be her back up during the peace meeting with the Grounders, and he agrees. They end up fleeing back to Camp with the other Delinquents after the peace meeting fails and a fight occurs between the two groups of people.
In I Am Become Death, Clarke and Bellamy debate on what they should do with Murphy, who has now returned to Camp. They also both catch the virus that the Grounders sent to camp by using Murphy as their "weapon". Both Clarke and Bellamy seemed relieved that Jasper succeeded in blowing up the bridge.
In The Calm, After the fire burned all the food, Bellamy announces that the Delinquents will go in small groups in search of food, and Clarke leads a group with Myles and Finn.
In We Are Grounders (Part 1), Bellamy doesn't let anyone leave the Camp to go search for Clarke and the other missing Delinquents because he thinks it's too dangerous with the Grounder army out there in the woods. He is relieved and happy when Clarke makes it back, and together they decide it would be best if the Delinquents left their camp and searched for another place to live.
In We Are Grounders (Part 2), They both participate in the war with the Grounders together. Clarke convinces Bellamy to go with them, saying that the group listens to him and that they still need his courage to go on. She reassures him later about having done well with the group, with 82 people alive. and Clarke shows regret for leaving Bellamy outside the dropship to die during the explosion. The next morning, Clarke is devastated at seeing the bodies that the explosion killed the night before and doesn't know if Bellamy is still alive.
In The 48, Clarke asks Monty and Jasper about Finn and Bellamy. She gets told neither of them made it, but she replies that they don't know for sure. Later, she says she wants to leave Mount Weather to go and find the rest of their people, just like Bellamy mentions the other Delinquents will come back to the Camp. At the end of the episode Bellamy looks heartbroken as Abby writes a message for Clarke on the wall of the drop ship.
In Inclement Weather, Bellamy, along with a few other Delinquents, leave Camp Jaha to search for Clarke and the other missing Delinquents.
In Reapercussions, Bellamy and Finn see Delano wearing Clarke's watch. Bellamy states that Clarke wouldn't give her father's watch up without a fight, and Finn says they won't either. Bellamy comes up with a plan to kidnap Delano, and once they do they bring him to the abandoned bunker and interrogate him on Clarke and the other Delinquents' whereabouts. At the end of the interrogation, Finn kills Delano, despite Bellamy disagreeing on killing him.
In Many Happy Returns, Bellamy is ready to leave Mel hanging off of a cliff in order to save time to go and find Clarke, due to Finn not wanting any distractions. Bellamy later allows Finn and Murphy to have guns and go search for Clarke and the other missing Delinquents.
In Human Trials, When Clarke sees Bellamy at Camp Jaha, she runs to him and gives him a big hug. Octavia admits she never thought Clarke would do that to Bellamy. Clarke then asks where Finn is, and Bellamy has a worried expression on his face when he says that he is out looking for her. After leaving to look for Finn, Clarke, Bellamy and Octavia camp for the night. Bellamy is seen looking at Clarke who sleeps with an unreadable expression and then smiles when she wakes up. The two share a brief conversation at night in the woods around the campfire before they start to head towards the Grounder camp. Once they get there by morning, both Bellamy and Clarke are horrified at the massacre Finn had created.
In Fog of War, Bellamy sits down with Clarke and the pair discuss Mount Weather and a plan to get the Delinquents out of there, but Finn shortly comes over to them and that makes Bellamy leave the table, giving Clarke and Finn some privacy.
In Long Into an Abyss, Bellamy and Clarke work together to save Lincoln. They later both get ready to fight in the dropship as the Grounders get their weapons out and try to kill the Sky People, believing that the Sky People lied about being able to turn Reapers back into men. During the episode, the two defend each other, especially when Lincoln attacks Clarke then Bellamy and when Nyko wants to hit Clarke.
In Spacewalker, Clarke returns to Camp Jaha with news; in order for there to be peace between the Grounders and Sky People, Finn must be handed over to the Grounders to be killed. When Clarke is hit by a Grounder, Bellamy expresses great concern and takes care of her as she fainted. Bellamy and Clarke do everything they can to protect Finn, but in the end, he surrenders and allows the Grounders to take him. When Clarke mercy-kills Finn, both Bellamy and Clarke are upset over his death.
In Remember Me, Clarke is still upset for Finn's death. Bellamy is concerned about her and is near her when he thinks she's not alright. On this occasion, he presents the plan to go to Mount Weather as an infiltrate but she denies it because it could be dangerous. Bellamy says he needs a better reason, and she tells him she can not lose him, too. After Finn's funeral, Lexa tells Clarke that to overcome the pain of loss she must see love for what it is: weakness. If she stops worrying about everyone, she will not put those she loves in danger. During the banquet, Gustus is poisoned. Bellamy knocks the cup thought to contain the same poison out of Clarke’s grasp. When tensions begin between the Sky People and the Grounders, Bellamy acts as a shield for Clarke, protecting her. Clarke understands that Gustus was poisoned by one of his clan and Bellamy senses that he was the one who poison himself, wanting to undermine the alliance. Later he reveals that he understood why the two are very similar: as Gustus would protect and done everything for Lexa, Bellamy would have done the same for Clarke. Clarke then sends Bellamy to Mount Weather and when he tells her that he thought this plan would kill him, Clarke responds by saying that she was weak and that it is worth the risk. Bellamy is visibly hurt by these words. Later, Clarke says that love is weakness, implying that she had to sent Bellamy away in order to dismiss her weaknesses and therefore the source of her affection.
In Survival of the Fittest, Clarke remains at the Grounders camp while Bellamy is traveling to Mount Weather. After the gorilla attack, Clarke schedules an action plan to conquer Mount Weather but she needs Bellamy to get to Mount Weather. Lexa asks if she trusts him and Clarke says she does because she knows that he will succeed.
In Coup de Grâce, Clarke keeps asking if there are news from Bellamy. Meanwhile, Bellamy manages to escape from the harvest chamber with Maya's help. Clarke is on the verge of breaking down when she distrust her abilities and position as a leader when she hears Bellamy's voice on the radio. Clarke is visibly relieved in hearing his voice, and the two have a brief conversation about the situation in Mount Weather. After talking with him, Clarke regains confidence in herself and plans a diversion.
In Bodyguard of Lies, Clarke mentions to Lexa how worried she is about Bellamy, and how she needs him to be able to turn off the acid fog.
In Blood Must Have Blood (Part 2), Clarke and Bellamy reunite at the reaper tunnels in Mount Weather. There, the group splits up, with Bellamy, Clarke, and Monty going off to find Dante. When they find Dante, he leads them to the control room. When Clarke sees what's happening to her friends, she calls Cage and threatens to kill Dante, which she does, shocking Bellamy and Monty. When Bellamy and Clarke are left with no choice but to irradiate Mount Weather, Bellamy holds Clarke's hand as they pull the lever to kill everyone and set free their friends.
When returning to Camp Jaha, Clarke is in too much pain to remain in the camp after everything she has done. Bellamy tries to convince her they did what was necessary, but Clarke just can't not think about it and look at all of the people she saved every day, knowing how she got them there. Clarke then kisses Bellamy on the cheek then hugs him, telling him to take care of everyone. Bellamy and Clarke have their goodbye as Clarke walks away from Camp Jaha, off to an unknown destination.
In Wanheda (Part 1), Bellamy is on a mapping run when he is called by Kane to meet him. He brings Monty. Once they arrive, they are met by Kane and Indra, who informs them that Clarke is being hunted and they need to find her. Later, in their car, Indra explains the legend of "Wanheda" and how the person who kills her will supposedly command death. Bellamy shakes his head, expressing disapproval.
In Wanheda (Part 2), Bellamy is with Pike, Indra, Monty, Hannah, and Kane when he spots Roan and Clarke across the field. He breaks into a run to get to her; however, because of the approaching Ice Nation army, Pike holds him back from going after her. Reluctantly, Bellamy agrees to hold back for a while. Bellamy anxiously waits in the cave they decided to use for hiding with the rest of the search party but when the others are sleeping in the cave, Bellamy dresses up as an Azgeda warrior and sneaks off by himself. He follows Roan and Clarke to the abandoned subway station.
Once inside, he spots a tied up Clarke and rushes to her. When he sees her, his face breaks into a smile and he tenderly moves a strand of hair away from her face, as if to ensure that she is real. Clarke, her eyes wide, says his name but it is muffled by the gag. Bellamy reassures her that he will get her out as he gently removes the gag. Immediately after doing so, Clarke calls out for Bellamy to look out and Roan appears from behind and knocks him to the ground, holding the tip of his sword to Bellamy's throat. Clarke begs Roan not to kill him and promises to do anything he wants if he lets Bellamy go. Roan backs off of Bellamy and Clarke's face fills with relief but it is quickly replaced by horror when Roan stabs Bellamy in the leg and punches him in the face so he will not be able to follow them.
Later, Bellamy is limping through the forest and grimacing in pain as his leg bleeds out, still searching for Clarke. Kane, Monty, Pike, and Hannah eventually catch up to him, but he ignores their pleas to give up the search, unwilling to let Clarke die. Monty stops Bellamy and tells him that it is no use; they have no trail and he can barely walk. Bellamy, frustrated and desperate, cries out that they can't lose Clarke. Then, shocked by his own outburst, repeats himself more quietly to Monty, on the brink of tears. Monty promises Bellamy that they will find Clarke, but not "like this".
In Ye Who Enter Here, Bellamy, Octavia and Pike rush to Polis when Echo informs them that the summit is a trap and that the Sky People there will die. But when they arrive in the throne room, Bellamy realizes that Echo betrayed them. After learning that Mount Weather was attacked, Abby fears that Arkadia might be next and Lexa commands them to leave. Bellamy tells Clarke to leave with them while Lexa offers Clarke protection if she remains as Skaikru ambassador. Clarke replies that she will be staying in Polis to make sure Lexa keeps her word. Bellamy warns Clarke that Lexa will always put her people first and begs her to come back home. Despite Bellamy's insistence, Clarke apologizes to him and stays with Lexa.
In Hakeldama, Clarke demands to see Bellamy before Lexa makes a decision about the fate of the Sky People after slaughtering an entire army of Grounders sent there to protect them. She believes that, since Bellamy saved Indra's life, he is still redeemable despite being part of the massacre. Octavia agrees to sneak her into Arkadia to see Bellamy.
Once in Arkadia, Octavia manages to bring Bellamy in a room where Clarke is waiting. Octavia leaves, slamming the door behind him. Bellamy seems surprised to see Clarke, who says they need to talk. Bellamy, sarcastically, calls her "the mighty Wanheda" and points out how she turned her back on her own people but now wants to talk. Clarke ignores the comment and proceeds by telling him that the Ice Nation paid a price for their attack and that what he did with Pike could create yet another war but this time, the Sky People against Lexa and the 12 clans. Bellamy replies smugly that he would like to see Lexa try. Clarke asks him if he wants to go to war and Bellamy replies that they have been at war since they landed and Pike understands that. Clarke tells him that Pike is the problem and that all of this isn't who Bellamy is. Bellamy says that she's wrong, that this is who he has always been but he has let her, Kane and Octavia convince him that they could trust the Grounders but he now knows who they truly are and he won't let anyone else die for that mistake. Hopelessly, Clarke tells Bellamy that she needs him, that she needs "the guy who wouldn't let [her] pull that lever in Mt. Weather by [herself]". Bellamy snaps at her that she left him, that she left everyone. He blames her for making a deal with Lexa, who abandoned them at Mount Weather, which forced them to change plans and to irradiate the entire level, killing most of the Mountain Men. He adds that she is not in charge anymore, which is a good thing because people only died when she was in charge. Clarke is left speechless by his outburst and both begin to tear up. Sitting down, Clarke apologizes to Bellamy for leaving but adds that she knew she could because they still had him. Clarke drops her head, shamefully. Bellamy crosses the room and kneels down in front of her, taking her hands. They look into each other's eyes and Clarke smiles at him. She tells him that she knows they can fix this but Bellamy replies that he's sorry too. He then handcuffs her to the table. Clarke becomes dumbstruck, struggles against the cuffs. Bellamy turns his back and leaves the room.
Later, Bellamy drags a cuffed Clarke in the halls with another guard, bringing her to Pike. Clarke begs him to not to this and Bellamy tells her that he's doing it for her own good. Octavia comes around the corner and knocks out the guard. She tells Bellamy to let Clarke go and Bellamy replies that he can't do that. They hear people coming their way and Bellamy asks Octavia to go. Clarke uses that moment of distraction to grab the guard's shock stick and shocks Bellamy with it. She then unlocks her handcuffs and runs away with Octavia.
In Nevermore, chipped Raven constantly uses Clarke as a way to get to Bellamy. Referring to him as the "good little knight by his queen's side" and saying that it's unfortunate he was never as devoted to Gina. At the end of the episode, Bellamy and Clarke are outside Niylah's trading post when Bellamy asks Clarke what you're supposed to do when you're not sure if you're the "good guy". In response, Clarke echoes her mother's words, "maybe there are no good guys."
In Demons, the two along with Octavia, Jasper, Monty, Raven, and Sinclair return to Arkadia. Bellamy goes directly to the armory to get more weapons while Clarke, Raven, and Sinclair stay in the hangar bay. After successfully discovering the passphrase for the flame Clarke leaves to go meet up with Bellamy, however along the way she encounters Emerson. She runs outside and tells Bellamy that Emerson is there and Raven and Sinclair are still inside the hangar bay. They go to the hangar bay and find Sinclair's body and discover that Raven is missing. Clarke concludes that Emerson has taken her friends to the airlock. She radios Emerson and tells him she'll give herself up if he frees her friends which he seems to agree to. Bellamy refuses to let her go on her own and follows close behind her with a weapon. However, Emerson notices and orders Bellamy enter the airlock so he can be chained up like the others. Bellamy complies with Emerson who locks Clarke's friends in the airlock and turns off the oxygen so they will suffocate. Clarke and Emerson fight as Emerson tries to make Clarke beg for mercy but instead, Clarke shoves the flame in his neck killing him. She is then able to free her friends.
In Join or Die, Clarke, Bellamy, Octavia, and Jasper are using the maps in Lincoln's journal in order to find Luna's clan. They find themselves by the sea but don't see anything present. Octavia then gets angry and blames Bellamy for Lincoln's death and Bellamy walks off. Sensing that he's upset, Clarke follows Bellamy and tells him that Octavia will forgive him eventually and that she's offering him forgiveness. They embrace each other for a moment before both being captured by the Boat People. Later when the Boat People offer safe passage, Clarke and Bellamy drink it at the same time before both falling to the ground.
In Perverse Instantiation (Part 2), Bellamy enters the throne room to find Clarke and Abby immediately pointing a weapon at the latter before Clarke reveals she is unchipped. Later, when Clarke says she needs to enter the City of Light to stop A.L.I.E., Bellamy tells her he trusts her when everyone else including her mother has doubts. At the end of the episode, Bellamy tells Clarke she doesn't look like someone who saved the world and Clarke replies, "because we didn't, not yet."
In The Four Horsemen, Bellamy and Clarke are busy at work in Arkadia. Clarke and Raven start to talk about how food will be rationed. Raven smugly reminds Bellamy about what destroying the hydro-generator did. Due to his actions last week, the lack of water will affect their crops as well and their overall chances of survival. Outside the gates of Arkadia, Floukru Grounders show up with sick people coughing. They decide to take them inside to Alpha Station to investigate further. Bellamy sees a bunch of the sick Grounders vomiting black liquid. The radiation is from fish that they ate. Luna asks if she deserves what she has for refusing the flame. Clarke says that they will do everything they can.
Outside of the med bay, Bellamy finds Thelonious Jaha getting into a vehicle and tells him to get out. After exchanging some words, Jaha explains that he may know of a place that can hold thousands of people instead of only 100. Raven doesn't trust him, but Clarke tells her that if Jaha is wrong then she will make a list of the 100 that need to survive. Clarke, Jaha, and Bellamy leaving to look for the bunker that was built by a doomsday cult, known as "The Second Dawn." Jaha informs them that the bunker will be at the lowest point. He also tells Bellamy that he keeps Clarke centered and that he made the right choices in the past despite the outcomes. Clarke finds something, and it's a staircase. They go down the stairs and after sifting through some cobwebs, they find skeletons. He knocks on a door and wants to know if anyone is there. Bellamy finally breaks a hatch off the door and they go inside. Bellamy lights a flair and they find thousands of skeletons. Sadly, it looks like the bunker won't be their salvation after all.
They return to Arkadia and Clarke starts working on her list of 100 designated survivors. She writes Bellamy's name as number 99 but is stuck on choosing the 100th person. She starts to cry and then Bellamy walks up to her. He says that if he's on the list, then she's on the list. Bellamy also warns that he'll write her name down if she doesn't. He then takes the list and writes Clarke's name on it as the 100th chosen survivor. After she asks about what they should do next, Bellamy says that they should put it away and hope they never have to use it.
In We Will Rise, everyone is in shock over Alpha Station's destruction in Arkadia, Monty tells everyone how bad the current damage is. The only good news about Alpha Station's destruction is that no one died. However, they'll need to deliver hydrazine to Raven and Abby. Roan offers his security detail as protection for their journey since it will be a perilous one. During the hydrazine delivery mission, Clarke and Bellamy discuss his relationship with Octavia. She tells him that it'll take more time for Octavia to forgive him. Suddenly, they approach a group of Grounders that looks to be a Trikru checkpoint. Clarke gets out of the truck and Bellamy follows. One of the members tells her that they're victims of an Ice Nation attack. As a result, one of their fathers has an injured leg and needs help. However, a curious boy starts to peek around the back of one of the trucks. He notices Roan and Ice Nation in the back of one of the trucks. He yells out to the group that Ice Nation is within the convoy and Trikru begins to attack.
The convoy eventually escapes their attackers, but then approach a river that's clearly an obstacle.
Roan says that he will find a path upstream. Clarke offers that Bellamy and Roan go in one of the rovers to move quicker. Everyone else is left with the convoy to protect the precious cargo. Afterward, Bellamy and Roan attempt to contact Clarke over the radio, however, they receive no response.
when Bellamy and Roan speed through the fields and find their missing convoy. Clarke is driving it and notices them approaching. She begins to let her foot off the gas, but the Trikru member forcing her to drive tells her to speed up. During all of this, one of the Trikru members is trying to dump one of the barrels of hydrazine off the bed of a truck. However, Roan decides to jump onto the back of that truck to stop him, They begin to fight as one of the barrels gets dangerously close to the edge. Roan kills him and stops the barrel from falling. Bellamy then circles around the vehicle and blocks it. He kills the person forcing Clarke to drive with a well-aimed shot through the windshield. At this point, all is well and the hydrazine is once again secure. Bellamy gets out and starts lamenting about how Octavia hates him. Clarke consoles him and says that she'll come around to see how special he is. Suddenly, someone says that there's a problem. There's an arrow in one of the barrels and it's empty as Roan kicks it over.
In DNR at Polis, Clarke and Bellamy are discussing the stipulations of the final conclave. Bellamy feels that it's a hopeless cause, but Clarke gets him to accept it. Octavia shows up on a horse and she says that she's there for the war.
In Die All, Die Merrily Octavia walks out into a courtyard after Gaia summons her. It's official that Octavia will fight for Skaikru. after the fisght Octavia won, she is wondering where her brother is since Bellamy isn't around for her victory speech. Bellamy wake up inside of Second Dawn. It then becomes clear that Jaha and Clarke are responsible for his abduction.
In The Other Side, inside the Second Dawn Bunker, Bellamy is arguing with Clarke and Jaha. He is furious at both of them for stealing the bunker and more notably for leaving his sister outside. Abby enters and asks about Kane. Jaha explains to her that Bellamy is the only person that his search party found. Abby still insists on using her radio to contact Kane. Clarke tells Jaha that their decision to lock the bunker's door is wrong. Jaha then asks if it's worth it to open the hatch. Abby says no but also says that she's not able to live with herself for it. Jaha then tells Clarke that she's stronger than her mother and that they'll figure everything out. He also mentions that they need someone to guard the door and Clarke says that she knows the right person. Abby arrives to treat Bellamy's wounds. Bellamy then convinces Abby to help him escape. Clarke goes to Bellamy's cell, and she finds an unconscious Murphy. She starts running to stop Bellamy and pulls a gun on him. She then fires a shot at the ceiling and says that she's doing what she has to do. He then tells her that he needs to open the door, but Clarke believes that they're saving the human race. Bellamy then tells her that she'll have to kill him, but Clarke can't pull the trigger. Bellamy opens the door.
In The Chosen, in the Bonker Bellamy tells Kane, Jaha and Clarke that he wants to get Raven. Clarke agrees with him and insists on joining him. Kane accepts their wish and says that there will be a place for them when they get back.
at the rover Clarke tells Bellamy that she didn't mean to hurt him and Bellamy accepts her apology with a smile. Suddenly, a figure jumps out into the road and Bellamy hits him, crashing the truck into a tree as a result. Grounders then ambush their convoy wanting their radiation suits and protective helmets. Just as things appear dire, we see Echo riding on a horse and put arrows through some of the attackers. She then kills more of them with a sword. Clarke and Bellamy finish off the rest. Bellamy tries to contact Monty. He gets in contact with him and asks for him to help them get to Becca's lab. Monty obviously obliges and Harper tells him that they should save their friends. Suddenly, Emori begins to cough up blood, and it's clear that she's suffering from radiation exposure. It appears that there's an issue with her suit, and Murphy intends to save her. He demands that Echo removes her suit, but that attempt fails. Suddenly, Clarke takes off her suit claiming that she has Nightblood. However, it's untested Nightblood and could prove to be a dangerous decision, Bellamy is worried about her, However, they proceed with saving Emori by replacing her suit and helmet with Clarke's.
Raven is staring at a screen. Bellamy, Clarke, Murphy, Emori, Monty, Harper and Echo then arrive. They then mention that they need to go out to space and live on the Go-Sci Ring. Therefore, they ask if Raven can get them into space before the death wave hits. She stares at the spaceship and says that the death wave can kiss her ass. Clarke then concludes the scene by saying that they're going back to the Ark.
In Praimfaya, Clarke, Bellamy, Raven, Monty, Murphy, Harper, Emor], and Echo are stranded on Becca's Island due to the approaching nuclear death wave. Once Praimfaya strikes Polis, the radio connection between the island bunker and the Second Dawn Bunker is broken, leaving Clarke heartbroken when realizing she will be unable to say goodbye to her mother. Bellamy comforts her before they focus on their survival plan in space. While discussing their plan, Clarke notices Bellamy's attention has drifted. Clarke tells him about her mother's vision coming true, suggesting that she might not make it, which Bellamy won't let stand and assures her that nothing is happening to her. Clarke insists on telling him what she needs to. Clarke tells Bellamy to use his head and that he inspires people with his big heart. But he tells her that he's got her for that, before their conversation can get any further, they're interrupted. Outside the bunker, Raven instructs Clarke and Bellamy to access the satellite dish to transmit the signal to power the Ark. Bellamy and Clarke are forced to separate and Clarke goes to the tower alone. Upon reaching the tower, she discovers the dish is not aligned with the Ark, so she must access it manually - from the top. She attempbts to radio Raven and Bellamy, telling them not to wait for her. She accepts that she may die today, then begins climbing the tower towards the dish. While ascending the tower, she notices the rocket launch in the distance, but still continues to climb. Bellamy, alone in the lab, is waiting for Clarke to come back. But the countdown hits zero and he's forced to make the decision to leave her behind. Clarke's speech to him made him make the "head" decision which is saving their friends instead of waiting for her or going after her. Bellamy is hoping till the very last second Clarke appears, but she doesn't. When they get to space, the Ring still has no power, Bellamy believes Clarke will still succeed. After a while, with no much time and the Ring still without power, Bellamy is starting to doubt his decision of leaving Clarke, right when the Ring finally lights up. After they safely make it to the Ring, we see Bellamy hearbrokenly staring at the burning planet, determined to do everything to honour Clarke's memory. Six years and seven days later, Clarke is revealed to have survived, thanks to her Nightblood. Her skin is perfect, clear of burns. Sitting on the hood of a rover, she admires the beautiful weather, while staring into the wasteland that once had many green trees. She calls Bellamy on a radio, despite knowing if he is dead or alive. Bellamy thinks Clarke is dead for six years. She speaks into the radio, saying it has been 2,199 days since Praimfaya and has attempted to contact them ever since. Earth has been survivable for over a year, but she has not seen anybody she had known from the bunker since the death wave hit. She still has hope that she will reunite with the people she once knew.
In Sleeping Giants, Bellamy and the group land on the ground, they immediately come face to face with the prisoners. In a surprise twist, Madi appears from the bushes and kills two prisoners in an instant. Madi tells them that they need to hurry because Clarke is in trouble. They are shocked to hear that Clarke is alive.
Madi and Bellamy arrive to the Valley just when Diyoza is dragging Clarke outside to torture her.Bellamy asks Diyoza to spare Clarke's life or else all the 283 prisoners in the ship would die. To prove that he's not bluffing, he shows Diyoza a mug that he carried from the ship. Bellamy makes it clear that he would trade all those lives for just one - Clarke Griffin. That's how much she means to him.
In Pandora's Box Clarke, who is in a holding cell hears the door open and Bellamy and Clarke truly reunite for the first time in six years. After a bit of talking, he tells her that Diyoza agreed to open the bunker.
In Shifting Sands Despite being injured, Octavia is determined to lead Wonkru to take the Valley, Octavia boldly rejects Clarke and Bellamy's ideas and marches Wonkru and Bellamy and Clarke down the dangerous path. A journey that would take six days. During the journey Bellamy and Clarke share a few talks. the next day they are reunited with Spacekru and Clarke and Octavia watches Bellamy reuniting with Echo.
In Acceptable Losses Clarke and Monty notice Cooper bringing in a body and locking it up in a biolab. When Cooper walks out, they break in and find that she's breeding the worms that attacked them in "Shifting Sands". They inform Bellamy about it and figure out that Cooper is planning on infecting one of the defectors with the worms so that they can use them as a weapon to attack Diyoza and the prisoners at the valley. But that means their friends at the valley would die too.
Since Octavia wouldn't listen to Bellamy or Clarke, they go to Indra about it. Clarke, Bellamy and Indra confront Octavia about her plan and the fact that it would kill their friends. After realizing that Echo and Raven were successful in gaining control over the satellite, Clarke and Bellamy agree to hide the information from Octavia. If Octavia found out, she would go to the next phase of her plan: infecting a defector with the worms to kill everyone at the valley. Clarke and Bellamy agree to go with Monty, Harper, and Madi to rescue their friends at the valley before Octavia attacks the valley.
In How We Get to Peace Clarke and Bellamy decide to sabotage Wonkru's plan to attack the valley. Clarke and Bellamy enlist the help of Indra. They use the worms to kill Cooper, and attempt to make her death look like an accident. Octavia finds Cooper's body, and realizes that she was betrayed by Clarke and Bellamy. She reveal she never planned to use the worms, but the eggs. after they killed Cooper they are talking in an abandoned house, Octavia interrupt the conversation and arrests Clarke for treason and plans to have her executed. Bellamy goes to talk to Octavia and tries to convince her to not execute Clarke. Octavia tells Bellamy he's pleading again to a traitor he loves, reveling that Bellamy loves Clarke. Bellamy uses Monty's algae to poison Octavia's food which causes her to slip into a coma.
In Sic Semper Tyrannis, After poisoning his sister, Bellamy tells Indra and Clarke about it but lies to Madi and everyone else that Octavia is just sick. They agree to leave Clarke tied up while they initiate their plans for peace. Since no one can listen to them, Indra and Bellamy devise a plan to have Madi become the commander. Madi doesn't want to take the flame because Clarke wouldn't want that. But Bellamy convinces her to take it, by lying to her that it would be the only way to save Clarke. After that, Bellamy goes to Clarke and tells her about the plan but Clarke refuses to accept it because Madi is just a child and they would be putting her in danger. So, Bellamy decides to keep Clarke chained until the ceremony is over.By the time they get to Madi's ascension ceremony, Clarke and Octavia find that Madi has already taken the flame and is unconscious waiting for the flame to take over, Clarke is disappointed with Bellamy's actions and slaps him in the face, Octavia orders her guards to arrest Bellamy, Gaia and Indra for treason. She then asks one of her guards to take Clarke and Madi to the rover. Clarke and Madi leave Polis to the valley and leave Bellamy to die in the bunker.
In Damocles (Part 1), Raven, Shaw and Echo come to convince Madi to lead the army. Echo attacks Clarke for leaving Bellamy in Polis. They get captured by McCreary's men but Clarke lies about Echo to save her life. Later the two share a conversation about Bellamy. Clarke points out she spared Echo's life because she noticed Bellamy loved her. Echo reveals to Clarke that Bellamy isn't dead. This realization strucks Clarke and she starts to slowly change her mind. It isn't until Lexa through Madi tells her, how leaving Clarke in Mount Weather was her biggest regret and she doesn't want her to make the same mistake she did that Clarke decides to let Madi go and tells Echo to save Bellamy.
In Damocles (Part 2), Clarke and Bellamy's relationship is restored after Madi convinces Bellamy to forgive Clarke by reminding him how he also did anything to protect a child that he loves, and telling him Clarke radioed him every day for six years while he was in space.
In Sanctum, Clarke and Bellamy are joined by Echo, Emori, Murphy, Miller, Jackson, and Shaw to go down to explore the new world. However Clarke is troubled by everyone's attitude towards her Bellamy reassures her that they will all come around. During the nightfall, the group is attacked by bugs and Shaw walks into a radiation shield as Clarke runs to help, Bellamy calls out for her as he is too worried the shield will effect her too. However due to her night blood she comes out ok. Once they enter an abandoned compound, Bellamy confronts Clarke over the radio calls she made to him during the six year time they were apart.
In Red Sun Rising, a binary solar eclipse occurs Clarke and Bellamy and the others separate into teams. Clarke, Bellamy and Murphy are in one room together, chained up to the wall. Muprhy tries to get under Clarke's skin by bringing up the past, however Bellamy tells him to stop or he will gag him. After a while, Clarke and Bellamy go check out the screaming from Miller and Jackson's room. Realizing that Miller and Jackson are effected by the red sun, Clarke and Bellamy tranquilizer both of them. Returning back to the room they discover Murphy is loose with the guns. Bellamy goes to Echo's door violently asking for a tranquilizer. After a moment, Clarke realizes that Bellamy has been affected too. He aggresively turns towards her and tells her he doesn't need her anymore. Murphy fires his gun at Bellamy and Clarke, making them run in different directions.Later Clarke helps Murphy stop Bellamy after overcoming her hallucinations. Bellamy tries to attack her but she stabs him in the leg and tries to help Murphy in the water. She is attacked by Bellamy once again and he starts to choke her until she usee a gas genade and knocks them all out.
In The Children of Gabriel, Clarke and Bellamy meet the leader of the Sanctum, Russell, and he asks if Clarke is the leader of her people she doesn't answer until Bellamy steps in and says yes she is. Bellamy promises to bring Madi back to Clarke. He returns with Madi and watches her reunite with Clarke.
In The Face Behind the Glass, Clarke writes down one of her sins on a lantern and tells Bellamy it was the sin about leaving him in Polis to die. Bellamy tells Clarke to stop and not do this. However she continues and apologizes for leaving Bellamy behind, saying he is her family and she will not forget it the next time because he means too much to her. Later Bellamy and Clarke both attend a party at Sanctum. Bellamy stands by the dance floor, in his thoughts, noticing Clarke dancing with Cillian as he is approached by Echo. By the end of the episode Clarke becomes a host for Josephine Lightbourne.
In The Gospel of Josephine, Bellamy starts to question Clarke's different behaviour after time and time again with Clarke not on the same page. He follows her and asks to speak to her alone. He speaks in Trigedasleng explaining how he feels about all the people they've hurt, and how he sees them in his dreams. At that point, Bellamy becomes convinced that that is not Clarke. He pins her against the wall and asks her who she is, Josephine knocks him out with a paralytic shot.
In Memento Mori, Bellamy is locked up in Josephine's room and mourns the loss of Clarke. He gets offered a deal for peace in exchange for not retaliating. However he's utterly broken and determined to avenge Clarke. After Josephine pushing him over the edge, he finally accepts the deal because he thinks that's what Clarke would've wanted. He breaks the news to Madi and the two share a hug. Later at night we see Bellamy grieve Clarke's death by the lake. By the end of the episode we learn Clarke's actually alive.
In Nevermind, Clarke is trapped in her Mindspace. She is confronted by Octavia as Blodreina about Bellamy because she can't bear to face him in her subconscious. Blodreina accuses her of not caring for him and claims he hasn't forgiven her and thinks of her a monster. Clarke gets really emotional and objects to these claims. Later Josephine tries to manipulate Clarke into giving up by showing her a memory of Bellamy accepting the deal, making her think Bellamy's got it and they don't need her anymore. After confronting Monty in her mindspace she decides to keep fighting and sends a Morse code message to Bellamy. During a meeting with Russell, Bellamy gets the message and finally learns Clarke is alive and is determined to get her back.
In The Old Man and the Anomaly, Bellamy informs the others about Clarke still being alive. They start to come up with a plan to get them all past the radiation shield and operate on Clarke by taking out the minddrive. However Emori informs Bellamy that they plan on wiping Clarke out today as she has only a few hours left. They manage to trap Murphy and Josephine by the radiation shield and after using an EMP to turn off the radiation shield, Bellamy takes Josephine past it in a desperate attempt to find Gabriel and save Clarke.
In What You Take With You, Bellamy drags Josephine through the forest, trying to find Gabriel. Josephine taunts him about how stupid his plan is. That it will only lead to all three of them dead and Russell killing the rest of his family back in Sanctum. She accuses him of caring about Clarke more than anybody else. Bellamy ignores all her statements, not letting her get under his skin. They get captured by the Children of Gabriel. After Clarke sending another Morse Code message, Bellamy asks Josephine if Clarke can hear them. She says that apparently, she can and tells him to say whatever he wants to say. After a beat, all he manages to say is "I won't let you die". This manages to reach even Josephine and she possibly gets scared for her life for the first time. Later she tries to taunt Bellamy about his relationship with Clarke. She brings up some of their worst moments and calls their relationship weird and exhausting to which Bellamy responds with "Tell me about it". The Children of Gabriel discover she is a nightblood and a prime and are about to kill her when Josephine gives Clarke control so she can knock them out. Bellamy and Clarke reunite for a brief moment. Clarke tries to free Bellamy, but with The Children of Gabriel approaching, he takes her hand and tells her to run and find Gabriel. Clarke refuses to leave him at first but quickly realizes she has to. However, she manages to leave Bellamy the keys so he can free himself and she runs off.
In Matryoshka, Clarke is trying to find Gabriel but the Sanctum guards are after her. Josephine helps her hide in one of the observation points. Josephine regains control over Clarke's body after hiding in the neural mesh. Octavia and Gabriel manage to find her, however, the Sanctum guards find them and are about to take Josephine back to Sanctum when one of the guards shoots the others and reveals himself to be Bellamy. Octavia, Gabriel and Bellamy take Josephine back to Gabriel's place where he removes the minddrive. In order to do that, Gabriel needs to stop her heart. After he takes out the minddrive and restarts her heart, Clarke is still not waking up. In the mindspace, Josephine hits Clarke with a hatchet and she starts dying once and for all. Gabriel tells them that he can't do anything because once the head stops telling the heart to beat, it's over. This hits Bellamy as he remembers him and Clarke are "The head and the heart". Realizing he can't live without her, he starts desperately performing CPR on her, crying and screaming he can't lose her and he needs her. Clarke hears Bellamy screaming for her to get up and fight, and picks up the hatchet and finally kills Josephine. Clarke wakes up and they share a very powerful emotional hug as they finally reunite.
In Ashes to Ashes, when Clarke wakes up, visibly shaken, Bellamy comforts her. The two share a brief conversation about how Bellamy saved her, but with not much time left, they have to figure out how to save the rest of their people. Clarke suggest a plan that she goes to Sanctum as Josephine but Bellamy is strictly against it, not wanting to put her in danger. They discuss other ways with Gabriel and Clarke encourages Bellamy to talk to his sister. By the end of the episode Clarke is forced to pretend to be Josephine as Murphy and Jade appear. Bellamy is visibly worried. Clarke ungags Bellamy and assures him she can do this and they are doing this for Monty to avoid bloodshed.
In Etherea, Clarke is overjoyed to find out that Bellamy is alive after all. She hugs him and whispers in his ear that she is lying to the Disciples about having the Flame. Her happiness turns to shock when Bellamy immediately turns around and tells Bill Cadogan what Clarke just told him.
In The Stranger, Bellamy tries to get Clarke to tell him where the Flame is. He pleads with her to trust in him even if she doesn't believe in transcendence. However, Clarke refuses to help Cadogan start the "Last War". Believing that he has no other choice, Bellamy has Clarke sent to M-Cap, leaving Clarke feeling betrayed by her best friend.
In Blood Giant, Clarke orders Bellamy to stay on Sanctum as he has chosen the side of the Disciples. However, Sheidheda points Bellamy to Madi's sketchbook containing her drawings of the Commanders' memories. Clarke attempts to talk Bellamy down without success before tearfully shooting and killing her former best friend. Running out of ammo, Clarke is forced to flee through the Anomaly without the book and breaks down on the other side.
In A Sort of Homecoming, Clarke reveals to her friends that she killed Bellamy, breaking down in tears as she does so. Octavia forgives her and tells Clarke that the real Bellamy, the one who would do anything to protect his sister and loved ones, would've too. Echo tells Clarke that they lost the real Bellamy a long time ago and his need for meaning through Bill Cadogan's cause killed him, not Clarke.
Clarke: "Do you think we care who's in charge? We need to get to Mount Weather not because the Chancellor said so, but because the longer we wait, the hungrier we'll get and the harder this'll be. How long do you think we'll last without those supplies? We're looking at a twenty-mile trek, okay? So if we want to get there before dark, we need to leave now."
Bellamy: "I got a better idea. You two go, find it for us. Let the privileged do the hard work for a change."
Clarke(To Bellamy): "I saw you in the woods with Atom. I know you're not a killer."
Bellamy(To Clarke): "This is on you, Princess. You should've kept your mouth shut."
Clarke: "No! We don't decide who lives and dies. Not down here."
Bellamy: "So help me God, if you say the people have a right to decide..."
Clarke: "No, I was wrong before, okay? You were right. Sometimes it's dangerous to tell people the truth. But if we're gonna survive down here, we can't just live by "whatever the hell we want". We need rules."
Clarke: "Bellamy, don't you see what this means? You're not a murderer. You always did what you had to do to protect your sister. That's who you are. You can do it again, by protecting three hundred of your people...Where's the radio?"
Bellamy: "And all I do is hurt people. I'm a monster."
Clarke: "Hey. You saved my life today. You may be a total ass half the time, but I need you. We all need you. None of us would've survived this place if it wasn't for you. You want forgiveness, fine, I'll give it to you. You're forgiven, okay, but you can't run, Bellamy. You have to come back with me. You have to face it."
Clarke(To Jaha about Bellamy): "Before you do [talk to Bellamy], I'd like to say something. When you send us down here, you sent us to die. But miraculously most of us are still alive. And a large part that is because of him. Because of Bellamy. He is one of us. And he deserves to be pardoned of his crimes just like the rest of us."
Clarke: "Please tell me that going to war is not what you want?"
Bellamy: "We've been at war since we landed. At least Pike understands that."
Clarke: "Pike is the problem. This isn't who you are?"
Bellamy: "You're wrong. This is who I've always been. And I let you, and Octavia and Kane convince me that we could trust these people when they've shown over and over again who they are. And I won't let anyone else die for that mistake."
Clarke: "Bellamy, I need you and we don't have much time."
Clarke: "Maybe, but you didn't want that to happen. You tried to stop it. Octavia will forgive you eventually. The question is, will you forgive yourself?"
Bellamy: "Forgiveness is hard for us. I was so angry at you for leaving. I don't want to feel that way anymore."
Clarke: "You know, you're not the only one trying to forgive yourself. Maybe we'll get that someday. But we need each other, Bellamy. What we're doing now, the only way we're gonna pull this off is together."
Clarke: "Octavia's not the only one who's changed, you now. You could've killed those prisoners in cryo, but you didn't. Diyoza would've killed me if not for you. Madi would be alone. You got that bunker open "
Bellamy: "Who knew it would turn out to be Pandora's Box."
Clarke: "I'm serious, Bellamy. The heart and the head"
Josephine Lightbourne: "Take you and Clarke for instance. Now that's a weird relationship, isn't it? First you want to kill her to save your own ass, even though it means the genocide of your own people on the Ark and then you become besties, bonding over the actual genocide at Mount Weather. Together. You lock her up, she locks you up, you leave her on Earth, she leaves you to die in the fighting pits. I mean, it's exhausting frankly."
Bellamy Blake: "I had an experience, something that changed me to my core, something that explains why we're still here and where we're going. It came to me in a vision. Mom was there. The Shepherd led me to her and there was a light and it was beautiful and warm and peaceful and I chose it and when I opened my eyes the storm had passed just like that."
Bellamy Blake: "Clarke, yesterday you were offering it up in exchange for safe passage."
Clarke Griffin: "Yesterday, I was bluffing. I made a deal to save my friends, knowing damn well I had no intention of following through with it. Today, I'm standing in front of my best friend who I thought was dead and I don't even recognize him."
Bellamy Blake: "Clarke, I am the same person who brought you back from the dead, who refused to give up on you. There is so much more at stake here than you know and I know you don't believe in transcendence, but I'm telling you it's real and I am asking you to believe in me."
Clarke Griffin: "Even if you're right, even if everything you're saying is true, I will not help that man start his war!"
Bellamy Blake: "Look at yourself, what you feel right now, the need to protect someone you love so badly you're willing to kill your closest friend, someone you trust who's telling you that the fate of the entire human race is at stake. All that suffering can end. Madi's suffering, too. I have no choice but to share this."
In "Nevermore," while Raven was possessed by A.L.I.E., she calls Bellamy "the good little knight by his queen's side" with Clarke being "the queen".
Their first interaction is in "Pilot". Bellamy wants to open the Dropship door, Clarke objects
In "The Other Side" script, Clarke aims a gun at Bellamy, threatening to kill him. However, in the script she couldn't shoot him because she didn't want to kill another person she loved. This possibly means that Clarke loves Bellamy, but it is never showed on screen.
In "Praimfaya," Clarke told Bellamy that people follow him because of his big heart, and that he should use his head. This made Bellamy decide to leave Clarke behind since she couldn't make it back to Becca's lab in time to get to space.
Bellamy saves Clarke multiple times. Three times in season 1: he saves Clarke from falling into hole and from getting killed by Dax and by Anya. In season 2, when they discover that someone put poison in Lexa's drink, Bellamy slaps the cup out of Clarke's hand. He saves her twice in season 4: shot one of Roan's men who captured her, later Bellamy stabbed Grounder ambusher before they could kill Clarke. Bellamy tries to save Clarke in "Wanheda (Part 2)" but failed. He save her once in season 5: Coming to ground to find Clarke who is captured by =Eligius Prisoners, he went to Shallow Valley to spare Clarke’s life. He saves her once in season 6: Bellamy revived Clarke by using CPR.
In "How We Get to Peace", Bellamy indirectly acknowledges that he loves Clarke while talking to Octavia. The statement does not specify romantic love and could simply mean platonic love.
Bellamy is one of the first to notice that "Clarke" is not Clarke.
In Season Four, Clarke and Bellamy are the only main characters to appear in every episode.
In "What You Take With You," Josephine Lightbourne, having access to Clarke's memories, lists the many things that makes their relationship so complicated and calls the complicated nature of their relationship exhausting. Bellamy agrees with her on this point.
- We will have to stay tuned to see where we'll see them next season, but it's pretty clear at the end of this episode that Bellamy is stunned by her choice," executive producer Jason Rothenberg tells E! News. "He was hoping that they'd finally be able to now come home and have some sort of normalcy. They've made it! They're back! 'Let's go have a drink,' he says before he realizes she's not coming in." -
- "It's clear to me that these two people have come to need each other and respect each other and love each other on some pretty deep level," Rothenberg says. "Obviously, it's not romantic, certainly for Clarke anyway, and it's never been vocalized that it is for Bellamy either. You could read as much as you want in their body language and their eyes, but that's something that is being put off again as a result of Clarke's walkabout." -"But you know what, the truth is that I'm not deliberately toying with [Bellarke]! It's just the story that we're telling now," he promises. "If it makes sense at some point, it will happen. If people really want it right now, the Bellamy/Clarke thing, I highly, highly recommend that they read the books. It's in the books! It's a very tense part of the books. If you want that right now, you can get it. At some point, the show will give it to you too, but for now, it's not there." 
Even though it may be difficult to wait for an inevitable, real Bellarke relationship, even the most hardcore Bellarke shipper must admit that if it happens too fast, it won't be as satisfying. -"Absolutely!" Rothenberg agrees. "Because then once people get it, they'll be like, 'Okay, next!' But it doesn't enter our minds as storytellers as, 'How are we going to deepen and play with the Bellamy/Clarke love story?' It's just not a part of the show right now. We played with the Lexa/Clarke storyline this season and that is still ongoing because both characters are still breathing. The journey is long, and eventually, we'll be able to tell that story in all its glory, but right now, there are other things in the way of that." 
Bellamy and Clarke's last scene. These are two characters that have become good allies and obviously, there's a huge fan base for them romantically too. How important was it to have that scene, and also the one with him helping her push that lever to kill all the Mountain Men? Jason Rothenberg: Important. Bellamy and Clarke are the leaders of the kids, certainly of The 100. They are two of our heroes. And they're a team. They compliment each other. They complete each other. I think they both realize now that they are indispensable to the other. Getting them back together to sort of finish the job was important, for sure. And Bellamy's gesture there to put his hand on top of hers and do it together – in some way take on the burden that he knew Clarke would be taking on in that moment – was certainly something that was important for him to do. I think Clarke appreciates it, but I don't think it lessens anything in Clarke's mind. I don't think he takes half the burden and suddenly it feels half as bad to her. But certainly, the bond, at some point in the future, that will serve to deepen their connection, for sure. Once they have time to process this.
Clarke killed all of Mount Weather, and obviously, this is going to affect her a lot going forward as she left to strike out on her own, even though Bellamy took on some of the responsibility. Why is she still blaming herself when Bellamy helped shoulder that responsibility? Bellamy's gesture at that moment was amazing and magnanimous. He doesn't want Clarke to take that on by herself. But at the end of the day, that doesn't really help absolve her of anything. Just because someone else did it with you, that doesn't make you feel any better about what you ultimately had to do. 
Bellamy's still pretty affected by that choice too, right? I suppose there's a world where Bellamy can't live with himself and what he did either and goes out and joins Clarke. That's not in the cards for these two right now, though. Clarke has reached the end of her journey and just wants to forget what she's had to do and be by herself, not reminded every second of these horrible things she's been forced to do this season in order to get her people back, from killing Finn [Thomas McDonnell] to shooting Dante to irradiating Mount Weather.
Clarke was the 100's leader and essentially became everyone's leader after everyone came down from the Ark. Can you say anything about what you're thinking as far as where does that leadership now fall? Does it go back to Abby? Does Bellamy take over, given what Clarke said to him at the end? I do think Bellamy is going to be recognized as the hero that he became this season. I think that Kane, in the very brief moment between the two of them, in the dorm, as they're freeing everybody - it's essentially an acknowledgement in so many words of the mistake he made in episode one of this year when he arrested him and they sort of disregarded the fact that these kids had been on the ground for this time and knew way more than they did. Bellamy had always wanted to be a member of the guard. Perhaps we'll see that ultimately coming to pass. Perhaps we'll see him getting some real responsibility. I don't want to talk too much about what my plans are for Season 3 but obviously, the dynamic within the camp… everything is going to change now.
What about [Clarke's] reunion with Bellamy? She doesn't have any hard feelings towards Bellamy, she's probably more guilty about the fact that she ran away from all of her people. Seeing any of her people is going to bring back the memory of what she was running away from, so there will be that. For Bellamy, he's angry that she left. He's angry that she left him alone to lead their people out of this period of war into this period of peace. There's some degree of resentment on his part, for sure, but when he finds out that she's in trouble, in the premiere, another gear kicks in. Clarke is special to him. He understands that Clarke is special in general, and finding out that she's in trouble activates his inner hero and he's immediately on the case. Probably he would do the same if any of his friends were in that situation, but certainly, because it's Clarke, has an added importance in his mind. When they come together, I don't think it plays out how people will expect.