I know it seems counter intuitive, but Detaching really does work, Especially with a WW.
Everyone here always thinks the their sitch is somehow different from all the others; I know I did. I found out rather quickly that it was EXACTLY the same...
Work on you, develop the relationship with your son, and become a man only a fool would leave.
I know you don't want to believe that this could possibly work, but you just need to remember to put the focus on you; that's what detaching is for.
If you focus on yourself and your son, then whatever happens with WW you know that you will be okay.
there is so much great info on this board. Sandi2 has amazing insight into the mindset of the WW. read job's thread in MLC on detachment and toxic relationships...
Remember YOU don't deserve to be treated like this, but YOU also can't control HER actions. You can only decide how you will react to them...
Find that inner strength and strap in for a long, rough ride... if you take the advice here, you'll come out of it a better, stronger man regardless of the marital outcome, I promise!