Scarlet: Kurt & Blaine
Blaine wears his adultery like a brand for six months after Kurt breaks up with him. He mourns the relationship properly and has a pointless crush on Sam and pretends not to notice Tina noticing him.
Kurt wears his heartbreak like a badge of honor for six months after Blaine cheats on him. He sings sad love songs around the loft and throws himself into his work at Vogue and tries fruitlessly to date Adam even when he knows it's going nowhere.
Blaine carries his guilt around with him for six months even after Kurt says what he does when he's in New York for the holidays. He goes through the motions at school and writes emails that he never sends to the man he loves and lets Brittany stroke his hair when she finds him crying one day after gym.
Kurt carries his depression around with him for six months in this secret compartment even after he skated with Blaine at Rockefeller. He lies to his dad when he pretends that he's fine and ignores Rachel when she throws him these sympathetic looks and misses having Finn around all the time just so he could have someone who would understand what he was going through.
And then they hook up at the Schuesters' wedding and Blaine proposes and Finn dies and everything that happened before gets all jumbled up into this confusing mass of emotions that neither of them can decipher.
Kurt cries for two months after Finn dies and nothing Blaine can say or do makes it okay. He's lost his brother and Rachel's a mess and New York suddenly seems really far away from home.
Blaine tries for two months after Finn dies to fix Kurt until he realizes that maybe he can't. He's patient because he can't imagine losing Cooper and Sam's really good at distracting him when Kurt needs time to process and he has a whole future in New York to look forward to.
Kurt lets Blaine hold him on Finn's birthday, doesn't even mind when he starts to cry until they're both red and ruddy and a mess. Carole finds them and cries with them a little until Burt comes home from work and then all four of them spend the next few hours poring over old photo albums until Carole gets a surprise call from Puck to check in.
Blaine lets Kurt know that he loves him unconditionally the night of Finn's birthday, promises that he'll never have to be alone ever again. Rachel shows up with sugar cookies and laughs with them when they find an old video of their Nationals performance and Kurt seems to get back his color at least a little.
And then Blaine graduates from high school and he packs up his old bedroom and heads to New York without a worry in the world. Their loft goes from three to four occupants and then Brittany decides to spend the summer with Santana in the city and Puck somehow manages to get three month's leave to take up residence on Rachel's floor. The six of them have an amazing summer, and one night in August, Kurt tells him that he wants to get married while they're all there together.
Puck gets ordained online and insists on wearing a yarmulke to perform the ceremony. Brittany finds a really bright pink dress at some vintage shop in Soho and demands that she be Blaine's Best Man. Santana steals a leopard mini dress from the Vogue closet and pushes Rachel out of the way when she tries to be the Maid of Honor. Rachel gives Blaine the wedding ring she'd bought for Finn and tells him that it's already been resized to fit Kurt. Kurt is stunning in a slate gray suit beneath the pale moon on their rooftop. Blaine wears Dalton navy and red because that's the first way Kurt ever saw him and he always swore that was the moment he fell in love.