That is so good to hear from you. I've seen it suggested on the board for men to change the decor around in the home (after the separation) to look the way they wanted it, and not how the W left it. So maybe your son can get excited about "just you men" fixing your man cave. Let him have free reign in decorating his own room. As long as it has a door that shuts, who cares?
In spite of his disappointment and hurt at his mom, I think he is going to like the new closeness with you. "It's just us guys" can be beneficial to his preteen years. That is not saying it would not be better for the M to R, but you are making the best out of a bad situation.
I think the advice you were given about waiting till the end of day when both you and W get home to deal with all her texting is the way to go. She is really making herself a nuisance, isn't she?
When she refers to herself as homeless or says she will have to sleep on "someone's" couch, do you have to bite your tongue till it bleeds? I could think of all kind of come-backs for that one, but not any you should probably use. I believe you telling her what you have is the best, "I'm sure you will figure something out". I like that statement.
HP, it is amazing how much you have done since you finally decided to turn things around. I am really proud of you. Not proud the M did not get any better. (In my VP, I think this is what it will take in order for it to get better). But I am referring to how you have found your inner strength again. You are acting like a man any woman would be a fool to leave, IMO. You get better every day, so don't let her tactics wear you down to the point of giving in to what she wants. That is why she keeps repeating this pattern.
Just keep coming here when you have a weak moment or just need to hear from someone to keep you going. I bet some of us will see your S.O.S.
It is not about what you feel should work in your M. It is about doing the work that gets the right results. Do what works!