[Teeth at his throat make Matt shiver right down to his toes. For a second he can't speak just continue driving into Karen's tight, wet cunt. If she wanted a hint at what feels good, that's one clear indicator aside from how hard he is moving with her.]

Cum on my dick, Karen. You've been so wet and hot. I want to feel you cum with me inside of you.

[Matt shifts to put a clutching hand close to her ass. The other he decides to slip up under her shirt. His knees buckle, trying to keep a grip because his own orgasm is building fast.]

God, you're so good.