"Hard" isn't gonna be that difficult if you keep doing what you're doing.

[ He's already most of the way there, facilitated by her weight sliding against his knee, by the way she arches up over him. His weight settles back on the couch so he can get a good look, and if it weren't obvious enough that he likes what he sees, he pulls Jolyne closer by the hand still pressed against her ass and runs his erection between her legs. ]

Or am I gonna have to give you a rundown of my 'medical condition'? Are you really gonna want me to play doctor while we do this?