I couldn't click past this. I too am still hopeful about my un-divorce....
He has really slapped you in the face. Talking to his ***** in front of YOU *and* your SON. That is abuse. Pack his stuff, have it turfed on the lawn, keep anything of value and sell it quietly, and change the locks.
Next thing, the ***** will be moving into your spare bedroom!!
I'm thinking of you, sending you massive hugs, as if that might help.
xxx