Packrat, both Mark and Lou have said some very sound advice from what I can see. Just to shadow what they have both said, if I were in your situation and my s/o was like that, I'd get rid of them before it got to the stage that you find yourself in now. She cheated on you once. That there is an immediate shut out for me. If my s/o ever did that, I'd show him the door real fast and I'd smack his ass as he got the boot out!