How do you tell if your girlfriend has cheated?

Answer 1

Does she act cold to you? Does she put herself at a distance if she was once the clingy type? Doe she make her room, car, phone, computer, purse, etc... all super personal. Does she get really mad if you touch her stuff, as if she is hiding something? Are any of her personal sites now private and blocked from you? In order to know you have to be your own P.I. Make a fakemyspace/facebook account with a picture she can't refuse to add, once you are in snoop around. Ask her friends what might be going on, if they were once open and nice to you and now lie or act odd that might be a clue. Does she accuse you of cheating? Does she ignore you more, or not care to see you where you once saw each other everyday? HAS SHE CHEATED IN THE PAST ON YOU OR ON SOME ONE ELSE?! That's about all I can think of now.