Stiles would do anything in the world, anything, to hear Derek make that noise. That uncontrolled, almost animalistic noise he made when he came.
And if it wasn’t enough, if having Derek filling his mouth wasn’t enough, he could see Derek’s teeth elongating, feeling the slight prickle of his claws- he liked that he could make Derek lose control in that way.
Stiles whined again as Derek pulled him off of his cock. He wanted to stay there, wanted to clean Derek up. But the kiss was worth it. And maybe Stiles let his guard down a little, because one moment they were kissing, and the next moment he was on his back. Not a position he was complaining about at all. His legs spread wantonly, a little smirk on his face because he knew his body drove Derek crazy.
His cock twitched in anticipation, as though Derek might not see how much he ne fed him. But of course he did-
Stiles cried out, his voice rough from underuse and having Derek down his throat for so long. Derek sank right down, took him so deep- he slid trembling fingers through his mate’s hair, spreading his legs wider as though Derek would need more encouraging. As though he needed the tease of his increasing slick.