Well, the only way you can get past this is by giving yourself space. I think it was a good call to cut this chick out of your life, especially since she was trying to keep you on some sort of leash that made you emotionally available at her whim. She knew of your feelings and manipulated the situation for her own benefit. You let her get away with it for a while, but now you're back to earning your own self-respect again. This will enable you to move on and give your full attention to a more deserving girl.