be more confident

I always feel like someone is judging me or looking at me and it’s really exhausting to go around like that all day, everyday. I don’t know why, but I feel so inferior sometimes. Everywhere I go I feel like the most unattractive person in the room. I’m constantly wondering what people think of me. It’s really hard to be confident when I never feel good enough. I think a big part of my lack of confidence is that I’ve never had a boyfriend; and i know how lame that sounds…but I just don’t believe that anybody has every liked me like that-and I don’t know why. I’m afraid that if a guy every does begin to like me, I won’t believe it and I’ll miss out. I want to gain confidence, but I just don’t know how. Saying all of this makes me feel really vulnerable; I’ve never told anybody this.