I feel out of place at parties?

I go to part, but I don't smoke and drink. I think they taste nasty. Anyway I think the reason you aren't yourself cause you feel that they might not like you for you that's why, but you know what. Who care. BE YOURSELF. I know it's hard, but you'll have more fun if you are. Plus I don't think you want to really be there. Just that you feel like you need to, but don't want to. That can be why you feel "weird" around them. Cause they aren't the people you would hang out with that's why.