This image’s reversal to porn norms makes me smile. Typically the man is focused on his partner and the act of penetration, while the woman stares into the camera lens. This is obviously a reversal of that set-up. Although in a normal porn shot, the woman is typically looking lustfully and longingly into the camera. This guy looks like she just slipped the tip in and he’s suddenly realized he might have signed up for a touch more than he was expecting.
I’m afraid I don’t have an attribution for this particular image.