Most Helpful Guy
it's cool. It's also a bit effeminate. So the question is whether your face and body are masculine enough to burn a few 'look manly' points to look cool. (Assuming your hair looks good long).
I had longish hair in my teens. Probably a mistake. Lol. 15 year old boys with long hair do not look like rock stars. They look like girls if you don't look carefully.