A/N: Loosely based on this amazing photoset (spuffina*tumblr*com/post/41928946484/sebastiansaurusrex-blaine-ran-down-the-halls-of)
It wasn't anything big. It was actually a tiny detail, insignificant to most. It was that small fact in their "relationship" that made Blaine realize that Sebastian is moving on from him.
They are friends now. Good friends, in fact. They've established that. But it still doesn't stop Sebastian from dropping innuendos and flirting shamelessly just to see the red creep up from Blaine's neck towards his cheeks, coloring it prettily, as he so often says. Blaine knows Sebastian still wanted him… until one spring afternoon that is.
He just got off the phone from a running late Sebastian when the realization hit him.
"See you in 5 minutes, Blaine."
Blaine. Blaine.Blaine.
He tries to remember the last time Sebastian has called him anything other than Blaine.
Other trivial things surfaced instead. 'Anderson' is no longer playfully flirty, just… playful. The "accidental" brushes are just that, accidental. He also remembers the times he can feel Sebastian's eyes on him as he walks away or when Sebastian watches him for long periods of time that is considered inappropriate for 'just friends', but he hasn't been met with a smirk (in response to being caught staring) in weeks. He can't remember the last time he called him anything but Blaine, the last time he called him 'Killer'.
Huh. Isn't this what he wanted? For them to be just friends. Since when did the inconsequential actions, that he thought so little of before, become so important to him? Since when did he associate the nickname to the thin line they've always been toeing since the day they met?
He never thought that Sebastian would take a step away from the line, away from the brink of them becoming something more, but it seemed he had.
Blaine doesn't know what to feel about it.