How do I become less fearful of guys?

[BBqueen]

I have a nice amount of confidence, but my self esteem is shot down the drain. When it comes to guys I'm just really terrified. Guys usually don't like me anyway. They always make fun of me. The few that do, or did like me were very unattractive. All my friends are girls but most of their friends are guys. I hardly ever talk to guys when I'm at school. It's almost to the point where I just don't like guys. I just don't feel comfortable being around guys. I feel as though I temporally lose my mind. I freak out in my mind. What can I do to over come this fear? I feel like it's taking a large part of my life, and its only going to get worse.