toughy...hmm...okay this is a dumb one but have you tried flirting with her. see what she finds so attractive about this other guy. make a move on her. show her that your not afraid to let her know your interested. (i know that it always impressed when a guy had the nerve to make the first move) show her what makes you so amazing. but don't look desperate. keep things light until she realizes that it's you she likes.
Hey. I love your little picture. *wonders if you watch Inuyasha*... As for your problem, I wish I could help you, but you can't make someone love you; and if you could, you'll find it just won't be as pure... I think the best thing you can do is just be her friend, and give it time. She might fall for you yet. Don't let it get to you down, just think about the fact that she's in your life at all.Try to be greatful, it's easier to smile. Best of luck. Take care, and keep writing. -Stefhy