ive heard this kind of story before man. basically she's the one in control and you submit every time she mentions that she wants and needs you. A guy should never be in a situation to endure this by a chick.
the idea is to make her feel like that she's at the point where she's going to make a huge loss and that she is more desperate than you are. So you need to speak to her in an authoritative, commanding manner and tell her that she is treating you in a very disrespective way which is what you do not deserve. what you want to do is to negatively validate her actions (with a little positive validation) and disqualify her as a girlfriend. when talking to her, dont sound apologetic or say things which sound very demeaning e.g. "How could you do this to me?" "Why would you do this to me?" Aren't I enough for you?" etc.
hope that i have helped. happy gaming dude
