Train, I have the same question.

I told my WAW that I could not be friends with her as long as she was in contact with OM. She's not staying at the house, so I have no way to tell if she is/isn't in contact with him unless she would be 100% committed to MR and a transparency plan was in place. However, if I knew she was NOT in contact with him right now, my approach in communicating with her would change (would be more friendly to show my changes). I guess I have to assume she is until it's proven otherwise??