You are wasting your time on her. Keep her as a friend and go meet other people. In fact take some time off from seeing her and even speaking to her. Just tell her you are busy lately and will get together in a month. Go out and enjoy yourself and meet some chicks that arent mind fucking you for their control and attention.
Current Stable: Some Audi with a V10, Couple of BMW's, one F Car, and one P car. One lonely GT-R with all the Euros.