Wow, I missed that. When you see something like that, it's almost always the man inflicting pain on the woman. I like pleasure during sex, no pain, so I don't understand the appeal. Not knowing in this case, but I would guess women allow it because the guy likes it. I've been slapped in the face, it hurts and shook me up, so I would never want that ever. Would she tolerate him slapping her in the face, say at the dinner table? I doubt it, but people dp shit during sex they would never do otherwise, I believe if it involves pain, it's to make the pain giver happy. Just my opinion.