ok, I am not a teenage guy, but I do have some advice for you... When I was a teenager (a couple years ago) I drank quite a bit, and guys loved it for the wrong reasons. Guys will show you attention, but that'ss not how to get a good guy. Respect yourself and don't do things you may regret telling your children one day.
I don't think just because a girl doesn't drink, it classifies her as "good". Or that girls who drink are automatically "bad". It doesn't work like that. It's what they do that matters. If they happen to only do certain things when they're drunk, then we might like them because of that (or not). It's got nothing to do with the actual fact that they drink. At least that what I think. o.o
I'll tell you this though, I wouldn't want a girlfriend who gets drunk all the time.
Seeing as how you're underage, using what guys like to decide whether or not to drink is really f***ing stupid. Have confidence, initiative, and a personality of your own. Every thing else flows from that - including whether or not a guy likes you.
Who cares what the guys like. I like drinking and if a guy doesn't like it he can go f*ck off because he probably has a stick up his ass anyway. Drinking doesn't make anyone good or bad, I consider myself a good girl and I like to go out and drink and have a good time and no one's gonna stop me from doing that.