I’m in a similar situation. As hard and as scary as it is, you need to tell her you won’t live like this anymore. I would do this ASAP, depending on when your son leaves. Why should she get to come home whenever she wants, get what she wants and needs from you her home, then take off with the OM whenever she wants?! It will either be a wake up call for her or it will allow you to move forward without her. Either way is better than sharing her with another man.
