Teen Wolf AU:  Derek is not staring longingly through the gym windows to catch a glimpse at Stiles dancing around in a flurry, laughing with his head thrown back and his mouth wide open. He’s not. And he is not drowning in misery and jealousy just thinking about Stiles’ prom date. He’s not.

Derek swallows and looks away. “She ditch you?” he asks, going for casual and sympathetic and missing by a couple of miles. “I’m….sorry to hear that. But, uh, you know, you might still be able to convince her you’re a good catch if you go back inside and make an effort. Or find someone else.”

A slow, secret smile spreads over Stiles’ face. “You’re such a nitwit,” he says fondly, shaking his head. “Wanna get out of here?”