She looks amazing, the ecstatic pleasure on her face and in her body alone would've been enough to put him over the edge as well. So when you add in the way she clenches around him, he's pretty much incoherent immediately as the overwhelming orgasm washes over him. His eyes flutter closed too, briefly, but he watches her as long as he's physically capable. Sharing this ecstatic moment with her.

As the orgasm fades, he slumps against her, still propped up by his elbows to keep him from totally collapsing. He rests his head against her shoulder, breathing hard and doing nothing but basking in the afterglow.