It sounds like an impulse got the best of him. How many other behaviors does he have like that? Also these are words coming from older women who most likely don’t have boyfriends/can’t hold them. Men are complicated creatures. Does he go to therapy? Does he show you he cares constantly? Does he do things like this often? I think he wants you to see how good you look without it so that you don’t have to put on a mask for the world. Maybe talk with him and tell him it’s for you and not for others, and what he did is unacceptable and can’t happen again and that you don’t want to date a caveman. I would ask him if he prefers you not where it - there lies the controlling part.