Well I have a new signature now!
Realm, I have no advice [Future Descan: Not Quite True]. My libido is so very, very, very strong. Always ready to go, baring special circumstances.
But I can say I've heard of, if not entirely understood, asexuality. One of my friends friend is asexual, and zhe gets along fine, from what I hear.
What it sounds like is that you got your own problems, distinct from but related to the same issues a pubescent teenager with a libido would have. Social anxiety, for one.
All I can say is what I said up above in regards to my staring problem. Bull on through it. It's hard. Very hard, I've only managed to say "Fuck it, I'm gonna do it anyway," very few times, maybe once or twice a month -at most-, and that's only lately. And sometimes, hell, a lot of the time I end up with egg on my face.
In answer to your final, probably-rhetorical question... Yeah. What if they do hate you? Really, what if? What happens? You lose from friends, maybe, if you even consider them your friends in the first place. You leave the party embarressed, shamed. And then you get over it a week later, at the most, probably sooner. And what if they -don't- hate you? Well... I can't answer that one. Maybe you can.
This got a lot more patronizing as I went on. But I'm terrible at these. Hopefully you see the sentiment is honest, if corny. And can take something from it. If not, well, then I typed a whole lot for nothing. I'll get over it.