Oh my. Such a fucking hot picture. Wow.
When fucking a man from behind, there is something about when he reaches back and pulls apart his cheeks that is just about one of the hottest things ever. It bespeaks many things to me. And they all arouse me.
Submission. It's not a natural act, that pose. It's something (in my mind, at least) that is done because I order him to.
Desire. I want it all, his hands are saying. Let me make it easier for you to fuck me hard and deeply, because I want it all.
Mine. The part of me that just wants to own that ass, make it mine, make him whimper and beg for it and....I don't know...just possess him.
Yeah, that's what I love about hands pulling cheeks apart.