All races cheat. If someone wants to cheat they will do it with or without you. You know William why don't you just ask her. Your driving yourself nuts over this. But like I said (from what you have posted) I don't think that she is cheating on you. I also think that if she wanted another man she would have broke it off with you. I'm sure if you tell her in a non-combative way, she will listen to you. I do think that if this is something that is always going on with all your relationships than therapy might be good for you. There is nothing wrong with talking to somebody were you can have a full filling life.