My girlfriend went on spring break to Cancun with her group of friends. She kissed a guy, and now she wants to be with him. She liked him before we started dating. He was her best friend. I was her best friend too but we had a falling out and didn’t talk for a few months (that’s when she became close to him) and then we started talking again. Her feelings for him went away after we got together but they came back about 8 months ago. She didn’t tell me this until she came back from the trip and told me she loves him and sees herself getting married to him, same thing she was telling me a week before. This guy caused problems in our relationship before because he had made it known that he liked her and wasn’t a fan of me. But she never seemed to care about it. She said she wasn’t planning this and she didn’t think anything was going to happen and that she didn’t even think she could ever do something like this. I find it hard to believe anything she says. My mind wanders to places it shouldn’t. I think that maybe she cheated on me before with him, or at least wanted to, maybe they have been talking for awhile, maybe she never really loved me at all. Every conversation we’ve ever had, whether it be about him, about marriage, about cheating, it all seems like a lie. Our entire relationship (two years) feels like a lie to me. I’m having trouble coming to terms with the fact that someone can claim to love you and talk about spending the rest of their life with you and constantly reassure you that everything is okay and then overnight change their mind and just drop you, and want that with someone else. Now I can’t stop thinking about her and everything I loved about her and everything I loved about our relationship. I don’t know what she felt for me, I don’t know if every time we went out, she wished it was with him instead, I don’t even know if she ever really considered me her best friend. I just can’t stop thinking about her, us, every where we have been, every thing we did, every thing she said, and how quickly she decided to throw it all away for someone else. I don’t what to do, I just want to move on, but I have no idea how to deal with all these questions.