It's a little of both, really. Dave doesn't know proper boob etiquette. For once, movies don't seem like a particularly good frame of reference for this sort of thing. Then again, it's pretty fucking stupid to think Feferi wouldn't be into something as debonair and romantic as an impulsive boob grab.

Only it seems kind of weird. Does he just grab and squeeze? That seems kind of fucked up to him. Like yo I like your chest things, so soft. Let me squeeze them.

He sort of tries to arch away as she grabs his chest, sputtering as he resists the urge to laugh. God, this is goofiest X rated comedy ever fucking made.

"Alright, alright. I get the point." He scoffs at her, sliding a hand up to cup one of her breasts. This is it, this is the big moment. He gives it a soft squeeze and god he knows why people like doing this. So soft. So fucking soft. He's just going to move his hands so he can cup both before taking the plunge and burying his face between them. "Has anyone ever told you that you're fucking perfect?" He says so romantically with his face smothered between her breasts.