I know for the most part it depends on the guy. But what is your preference on how short or how long a guys hair is. If you want send pictures of guys whose hair is too long for your liking, or too short for you liking.
Guys, same thing for you, but since, for the most part, girls do more stuff with their hair than guys do. What kind of styles of hair do you like a on a girl. Clearly it depends on the girl as I stated before but just in general. Also, I don't expect you guys to know what's the name of the hair style. Just basic information, or a picture to help explain.
I can't say exactly the length that I prefer on all guys, because some guys look better with long hair, others with short hair. But I can say that any hair length past the ears, is too long for my taste. Personal preference (: