Most Helpful Girl
I think it could be two things. 1) he is not like everyone and much rather you have the short hair cut because it what attracted him towards you. OR 2) Now that you have this new haircut, it makes you look hotter, you get more guys attracted towards you and that's more competition for him to handle. But it depends on the type of person your boyfriend is. If he is a siimple guy, he likes simple things, it's probably the first option. But if he is a very jealous guy and he is not okay with you being with men a lot it could be the 2nd one. Ask him why he really dislikes your new haircut and what about the other haircut made you look better.