O - When my Xw first moved out she told me there was no one else, she had no interest in dating, blah, blah, blah. Well she started dating and interacting with guys almost immediately after she moved out. I sat back and waited for her to decide and 8 months later she finally filed.
The one regret that I have is that I did not immediately file for D when she first moved out. Instead we divided up the bills, I helped her move, and essentially I paved the way financially for it. At the time I felt like I was in a catch 22. She wanted to move out but couldn't afford to do so on her own so did I want her to stay in the house if she didn't want to be there? At the time I wasn't strong enough and then 8 months later, after she had been dating and found someone she decided to proceed and file. However she didn't tell me she was dating someone and things had progressed to a level that she was comfortable with. She then asked me if I would help her move out of her apartment and into her current condo which I agreed to do. Then about a month later she told me she was dating someone.
My only saving grace was that I did not chase her, contact her, tried to be friends with her, etc. When she moved out I did leave her alone.
I learned that you just can't stick your head in the sand. I don't believe my XW would have changed her mind if I had filed vs waiting on her but at minimum it would have made her pretty uncomfortable.