Barry gasps, pushing into Derek's grip. It doesn't seem right or fair, it doesn't seem possible that anyone could have someone like Derek on their knees in front of them, but here Derek is, looking up at Barry with an expression that's near enough to break Barry's heart.

"Yeah," he breathes as Derek opens his mouth and takes him in, not quite thrusting yet. "This," he says, overwhelmed and reverent and so hot he feels he'll catch fire, "And then I'm going to make you come so hard you cry, Derek. Whatever it takes."