Girlfriend problems, please help!!?

You know you have already looked at her phone. you already have doubts. I say ask her about it. yes she is going to be mad as heck at you for looking at her phone. With that being said your upset that she is going to go see her ex and hiding it from you. If it ends your relationship it saves you a lot of problems bc she wont be moving in with you and you can move on with someone better.