Perhaps I'm a little strange, however I don't feel that I have a strong preference. Sure I like hair to be around shoulder length or longer but I mean it depends on how the girl looks in regards to everything else. Some girls I know would look sexier with long hair because of the shape of their faces, bodies and everything else and some girls I know would look sexier with shorter hair than they currently have. When I meet a girl and end up in a relationship I generally don't meet them thinking "oh they're pretty but if only she had long hair" it's "Oh damn, she is hot, funny, intelligent god damn I like this girl!" I don't want them to be different, I just want them as they are there and then. In fact my ex once dyed her hair brown because she thought it'd make me happier (because most of the girls I have dated are brunettes and a majority of the actresses/singers/celebs I have crushes on happen to be so too) I was surprised and whilst yes I liked the brown hair and everything after a couple of months I was really like "I miss you being blonde" to her because I just didn't associate the brown hair with the girl I met a couple of years prior.