I don't really know what to do. I just found out that my girlfriend was cheating on me. I was talking with a few of my friends and the topic of relationships came up. No one knew we were dating bc I'm still in the closet. However one of my friends, I'll just call her Katie, said that her and my girlfriend were dating. I hung up the call and just started crying. I called her bc she wouldn't stop texting me saying that she was sorry and she didn't mean to. I don't know if I should forgive her. Does anyone have any advise?