I love short hair on a guy, it would bring him more bright sun-like makings which can affect people around, while as for some of the artists who keep long hair, I think it's OK since it can make them more artists, in a word, it all depends on the one himself.:)
well it depends on the girl. but to me i like long hair but not too long like emo boys have, but honestly it dont matter to me i look for the personality more than the looks but i would be more satisfied if the guy was cute too
Truly it depends on the facial structure on the guy. If you can pull off short hair you should go with short because if the girl has short hair, she probably doesn't want you to have longer hair than her.
Medium. Not too short (or it looks like they're bald) and not long (they look like a hobo because they dont really brush it). It should be shaggy, but not hanging in their face, show your eyes :-). I think that shaggy works best with curly/wavy hair, but if you have more straight hair, then go for a shorter cut.
that all depends on hair color, style (of the guy), and the girl, personally I love a guy with shoulder length, straight, colorful (back or a bright unnatural color), hair, but lot of the time girls like medium or short hair