why is she in the MBR? Take her stuff and toss it out! Make a statement. You are sharing a bed with a woman who is sharing a bed with the OM.

And is she out every night? Oh heck to the no! She needs to be home with your son. You split those days. She wants to go disappear 3 nights a week, fine. But you tell her then you get an equal amount of weeknights to be wherever you please, whether you are in your bed, or at a friend's house.

Splitting household duties? Nope. You do for you and your son. That's it. She doesn't feel like being a mother, that's on her. You continue to be a father and worry about just him and you. I would not ever have a meal on the table for her. Ever.

Time to get you cojones back, my friend! You'll feel so much better for it, it will be good for your son to see it, and she can get a dose of reality.