The girl I'm in love with has a boyfriend
I need advice from an outside source other than bias friends, there is this girl who is my friend she is going out with an ex mate she supposedly has mutual feelings for me she has expressed a certain dislike for some qualities in her boyfriend and has expressed that if circumstances were different she would be with me, every time I get close to getting her to dump her boyfriend she pulls away this goes back even before he was going out with her I would get to a certain point with her it was like she was afraid of something she dropped contact with me then the next time I saw her it was like nothing had happened, normally with all the other girls I have been this would never affect me, before I would have given up but for some reason I can not let go and she is not helping by expressing feelings for me back, I need help what should I do?