But I will talk from my experience. I was a WAW who never actually walked. I walked mentally, and just left my body behind in the house and the marriage. And for years, my husband pretended he didn't notice. Life just went on. But then one day, I realized that my husband was involved with another woman. And suddenly, I realized that I was losing something important to me! I felt like I was being robbed.
Never, in all the times I talked about separating, or demanded that he move out, and while I dreamed of a new love, did I ever think I valued my husband as a person, as a lover, as a father, as anything. (Ugly, I know.)
And then one day, he wanted out. He was planning a new life without me. And I was miserable. I wanted him back. And I set my full will to winning him back.
It is fair to say, as ugly as it is, that I would not have changed, if he had not seriously looked for a new relationship. It's just human nature. But as Joni Mitchell sang, "Don't it always seem to go that you don't know what you've got til it's gone?"
I'm not suggesting this as a ploy. Don't do it to win back your wife. You can only do it when you are truly ready to move on. I'm just saying that, under those circumstances, it is likely that your wife would have second thoughts. What she does with them, I can't predict. And what you do if she changes her mind, I also can't predict.