[Judging from the way his expression becomes even hungrier (if that was even possible), he's very pleased by this development, and he begins rocking his hips a little more steadily in response, just watching himself slide in and out of her.]

You have no idea how exciting this view is right now. You should take a look for yourself-- you might like what you see.

[If she's leaning back like that, she'll probably be able to get a decent view on her end too. Not quite as direct as his, perhaps, but enough to get the idea.]