I don't really know what to tell you. I don't have very good luck with girls, even though they make up the majority of my friends. In 9th grade, one of my friends that I liked, Megan, seemed to like me, or so I thought. We always sat together, talked and she came over to my house once for a party and borrowed a lot of my manga. We even went to Homecomming together, even though she was going with her family anyway. For some reason, she had a complete personality 180 and completely stopped talking to me and pretty much denied my existance. To this day I still don't know what I did to piss her off and I probably never will.
Another girl I liked after giving up on Megan was Esther. She was a really sweet foriegn exchange student from Taiwan. I should have known not to get too attached to her as she was only staying for one semester, but I took the risk. She came over for a Christmas party and we also went to go see King Kong a week or so later. I thought that there may have been some chance with her, but I guess not. She is now attending school at an all-girls academy in New Zealand and we email back and forth even now and then.
The latest is Danielle, who moved here from Missouri. She is different than the other girls that I have liked in the past. The girls that I have usually liked are the sweet, quiet, cute types, whereas she is one that many guys would lust after, which they do. I don't know why I fell for her, but I did. I didn't have any feelings for her until after we got back from Christmas break. We went to see The Fray in concert back in January and had a great time, but that only served as a catalyst, as I broke down and told her how I felt the night after. She was flattered and was fine with it and all, but she has a boyfriend already, and they are already pretty serious. We're still friends, but it is kinda hard being around her.
And then there is Bailey, a girl that I have always had a crush on since kindergarten. We've always been friends since then, and I think that we may have gone out for a while in elementary school. Now she is going out with one of my best friends, and they seem really happy together. As much as I like her, I don't want to break them up and jeopardize my friendship with the both of them.
Sorry for the really long, and probably unnecessary, post. Just know that you are not alone in your problems. And I know that you haven't, but don't change yourself too much just for a girl. I wish you the best of luck my friend.