He knows it's winding down when she says his name like that, the word reverberating in his skull and kicking out all other thoughts. Frank holds her hard enough to bruise, something he's never done either, but he knows he can't really hurt her either - not without her consent anyway.

"I," he starts, voice high and breathy as he feels his completion begin to move through him like a wave, tugging just behind his belly and tensing up. "I'm with you. I'm here."

And to people like them, that's the only important thing, isn't it? Being present. He nips at her earlobe and allows the rest to take its natural conclusion, his whole body vibrating in anticipation for their joined release.