Good morning,
You can only hold on to the end of that rope for so long. I think it's good that you told him it's time to decide. Maybe that will knock him off the fence. Perhaps the only way to get him to face reality, and burst the bubble, is if he moves out and experiences it first hand. I won't be surprised if that's what it comes down to for me.

OW does sound like a scary one. She will do anything to get what she wants ... no matter who she hurts? What a delightful human being ... NOT! But I see what you mean about her. You have history on your side, a daughter, a home. He obviously is thinking hard about giving all that up if he has not yet. And that may what helps him with his final decision. I think about that a lot myself.

Gotta get to work! Hope you have a good day.