Responses
Perhaps he knew the blond was sexually attracted to him already, so what he was really surprised at was that it was a lot more than just an attraction?
Even if he knew that the blonde felt attraction for him, it does not make the assault look better.
"oh, his guy won't stop dating people i like, so i'll rape him until he says he won't do it anymore" XD that's basically it, but the sex scene was HOT AF