Love is an amazing feeling and it can absorb you and send you to the clouds, but you have to stay rational at least sometimes :). I’m very sorry you had to ask yourself the question of whether she will cheat on you when lonely. And I think it’s a little early to talk about marriage when you hear stuff like this. Anita is right, your girl needs to do some healing before she can commit to you. Otherwise, I think she’ll struggle in any relationship. I also get the feeling that she’s not happy with herself and I don’t think this is a good state to be in for marriage. However, I think you too need to work on yourself as well. I think you rely too much on her for your own happiness. That’s a tough position to put yourself into because it raises your expectations and can burn you. I think YOU can help her, but SHE cannot help you here. So be careful and try not to hurt yourself. Don’t expect too much. Having said that, you’re young, you only live once. Do crazy things. If you think you can/should move with her – do it!