Update and question:
I have gone to my lawyer and will be filing for divorce on grounds of irreconcilable differences and adultery. I have told the STBX about the lawyer, and confronted her with the evidence of her affair. She admits that she has been intimate with the OM, and will continue to do so through the divorce process.
The situation has become intolerable. She is trying to make it my fault by saying I drove her to cheating by not being passionate about anything.
Can I force her to move out?