>can long hair look good?
Yes, but you gotta be handsome, and take good care of it.
If you already look like a retarded teenager, the long hair will only make it worse.
If you're already beautiful, the long hair can make you even more attractive, but not every handsome person can pull it off, it takes some specific kinds of faces and hair types and colors.
>tl;dr: yes, but only if you're a handsome fella