Ahh, man, you keep ****ing it up over and over again. You keep sleeping with the girls on the first date and then complain about relationships. C'mon, you slept with her on the first date too, what does it tell about yourself? You are as big of "whore" as she is. Right?
If you are looking for a serious relationship, but know it's not gonna be with her, then why are you still with her then? But if you just want to **** and have a good time with someone, then why didn't you make it clear to her long time ago?
You got to figure out what you want first, man.