There is something much worse going on with that man. If he actually enters her while she is reading a book or trying to stop throwing up he has some serious issues. Even trying to keep an erection knowing she can't stand him shows his complete lack of self-respect.
If I was about to have sex with a woman, and she was acting like it was being forced upon her, I simply could not get it up. My member would know better than I which way was up, were I to be addle-brained at the time.