>>1
Kid, don't worry because you are very young. I got five years on you and I too haven't had a girlfriend and I chose a major in college that consumes my life (Electrical Engineering, I chose it to challenge myself and because I like it). Sorry you got other problems, but what alleviated the pain? Extra curricular activities. I'm part of five clubs, run one of them, and am involved in a UAV research project. I keep things busy and I figure that I might as well not be in too big a hurry. If you are in a hurry though, wait till college....I noticed that for some damn reason, EVERY one of my friends who lives in dorms has a girlfriend that they got freshman year. Me I'd rather not pay the fucking $7000 per semester living costs and save some cash. Everyone tells me I'm young and shouldn't worry too.

My advice: get involved in school activities. Try to be more open. Adopt an apathetic attitude towards certain things. I had the courage to ask out the most popular girls in my school to prom, because I knew that even if I got shot down it wouldn't matter in the long run. Granted I did get shot down, but at least I tried. My point is that if you go around not caring about stupid shit and not getting caught up in the high school emo fest, you'll be better off and most likely viewed as more mature. And it won't hurt at all to go to the gym and lift, it will build up some muscle and change some of that weight into more useful stuff.