Love and being what I am?

When i was 19 I had my first girlfriend. She would do anything for me in the begining and I for her. I do know she loved me but definitely not how i thought. Well Her ex boyfriend came back in the picture and he pretty much made her remember him. I told her how i felt about it and she she didnt talk to him as much. but then he came up in every conversation... I was a bit jealous about that but i kept it to myself i didnt want to be one of those people who tries to control a person..even if I was more dominant, im not a butch. not that i beleive in labels..several months later we moved in. it went downhill from there. we broke up. I'm 22 now and 7 months ago we started talking again. recently she said she wanted to come see me but she might cheat on her bf with me. as much as i love her i couldnt live with myself cheating with someone elses woman. since that day she hasn't called much or anything. I feel like I'm getting played around with. ever been same situation?