Hey . hack 0. Judging by your name, you sound like a fellow anime nerd. No shame in that.
I know what you mean man. I have quite a few friends, but not many Christian friends. If you aren't picky about the spiritual status, I would say, get a job, and you will have many friends. But, it would probably prove wise to seek Christian friends. Like you, I too have started going to a Bible study. There are a lot of cool people there (cute girls too), but after hanging out with nonchristians for so long, it really feels wierd to me. I don't feel like I can get into any conversation. Normally, I can make people laugh, but when I'm around Christians, I feel like I have to be careful of what I say as not to offend. For instance, I'm a huge movie geek. Many of the films I watch happen to be rated R. I can't comfortably speak of these films with most Christians. Also, most people my age, Christian or otherwise, don't share the same interests as me, thus it's really difficult to start a conversation with these people. I know nothing about Christian rock. I'm not at all into sports, and it seems that that's all these Christian kids are into. Now, if these kids were into classic film, indipendant film, economics, or linguistics, I could talk to them. But I've yet to meet any Christian people like that. I've been able to meet plenty of nonchristian people with these interests.
I'm rambling. But I guess what I'm getting at, is that I understand the difficulty, as I'm in a similar struggle. The only solution I can see, is to get into something these people like. But as selfish as it sounds, I don't know if I really want to be in this group of friends enough to learn all about something trivial that I have no interest in. If only I could make them all like something I think is cool. But that's not going to happen.
I guess I can't really offer advice, but hopefully I can offer comfort in knowing that you're not alone.
Heed the advice of the previous posters. Pray.
Peace