i used to hate when guys had long hair especially if it was longer than mine but I've moved past that! i think Jase Robertson from Duck Dynasty and Jared Leto may have had a role to play in that haha but as long as it looks good, i dont care.
I like it when my babe's hair is longer because I like running my fingers through it. I also like it when guys have hair long enough to put a short ponytail at the back of the neck. I don't know why but I think that's pretty hot.
I happen to love men with long hair and a bit of a beard. I think you have to be able to pull it off though, because it can either look really right, or really wrong. But when a guy can pull off long hair, I find it SO attractive.