Then good fucking riddance dude, if she isnt your girlfriend, but your "best friend" you had feelings for (or just wanted to bang), but you cant get anywhere with (then whats the point?), and she knows it, and prolly abuses it since you said she is selfish, then its really better off just cutting ties, shouldnt have gone this far to begin with it if she is as you describe.
Actually you are one of the handful least annoying peeps around here, you TRY your hardest to be annoying, thats just part of your charm though Some here dont even need to try to be insanely annoying.