Just to clarify the above, I am not OK with her actions/intention. My confrontation is not meant to produce any change in her behavior as I do not think it will or can. The purpose is for me - to put my boundaries in place and enforce them. It is not acceptable to me for her to be seeing the OM while she lives in our house. It is not acceptable to me for her to share the same bed/bedroom. I also know that by me setting these boundaries it may hasten her intent to separate. But I must do it to protect myself emotionally.