I'm going to take a BM on this thread, but hear me out, I know what I'm doing.
D&D is fun stuff. I played it a lot as a kid, but haven't played an RPG in a while, unless you count Battlestations. I still review the books and minis, because even though I barely play D&D any more, I still think it's interesting.
The problem is, it's not hard to become a social outcast. I know, break out the torches and pitchforks, I'm stereotyping. But I'm telling you, I've been there, and it's way too easy to spend your whole life fantasizing about defeating the terrasque, claiming the portal to the underworld, and seizing a magic vorpal sword +8. And then you're a dork, big-time.
I'm not saying you should quit playing. But balance it and limit it. Don't play every day. Don't talk about your character at school. Have friends that don't play D&D, and don't try to recruit them.
Play sports. Talk to girls. Start a hobby that doesn't have anything to do with computers or games. Go camping, go to school football games, go to the dances at school. And talk to girls.
I'm speaking from experience here. I was an enormous geek in high school, and later on, too. I limited my entire life because of role-playing games. I don't play much any more, and when I do, it's just with my kids. I have lots of friends who don't even play board games.
I am also speaking from observation. I have a friend - a gamer buddy from a ways back - who is over 30 and not married. And sadly, he's not likely to be. All his friends are in his RPG group. He lives alone, and though he bathes regularly, is frightfully scared to talk to girls.
I've met you, Dyz, and you could go either way. You're a good kid, but this isn't life. It's a pastime. It's fun, sure, but it's no replacement for having a life.
I'll stop now. Sorry to be a downer - I'm not saying don't play D&D. Just don't let it turn into your life.