Please help me and need advice?

Please , please , please make sure you keep away from her you seem like such a lovely person and she should have never acted that way. Look for other options try dating others. do anything to get her off your mind maybe if you get a girlfriend she will realise she has to stop hurting you. I think she might just be using you because she has a sex craving or something and that's the only reason sh'e coming back for more. Whatever it is that makes her want to come back , it is pure evil that she thinks that it's acceptable to hurt you like that. So please just keep your distance, no matter how much she tries to get to you or you want to be with her. unless you have evidence she hasnt slept or fooled around with anyone and she is definetly only intrested in being with you and she does make effort. But please be careful you seem like a good person who doesnt deserve that sort of heart ache.