Blaine bit his lip as Kurt's eyes met his, and for a moment he thought he might forget himself and get lost in the way that Kurt was looking up at him when suddenly Kurt's orgasm hit. He felt it first in the twitch of his cock in Blaine's hand, and then it was pulsing, coming in ropes over his belly and Blaine's fingers.
It was the clenching of his muscles around Blaine's cock that pulled him over the edge. Blaine gasped at the sensation because he was coming inside of Kurt, and everything became that much more slick and easy, and he dropped his hand from Kurt's now softening cock to hold both hips between his hands and thrust into him, frantic and out of sync, through his orgasm. It felt amazing, like nothing he'd ever imagined.
Thighs growing rubbery, Blaine was quickly spent, collapsing against Kurt, cheek pressed to his chest as he laid there, panting and hot and sticky and satiated. Blaine wanted to open his eyes and move his lips and tell Kurt how much he loved him, but for now, all he could really do was give Kurt's arm a light squeeze where his fingers had landed.