If you don't want to leave her, then you should hope she really isn't intending to cheat. You should still talk to her about figuring out strategies that would ensure she doesn't end up in a compromising position. Stick by her friends. Don't drink too much. Don't let other guys get too close. Things of that nature. Let her know that if you found out she was kissing somebody else behind your back, it would probably be the end of things. If you accept any less, then you're being a sucker.
see the review