I think the best advice you were given was from RobX, Coach and Pearlhabr.
My situation changed when I decided to start GAL on my own, I joined a meetup.com to get out and meet new friends. My W took one look and said "there are women there who will pursue you". She ended up joining and coming with me. Bear in mind she refused to even go out on a dat with me before.
See, in her mind it was fine for her to go out and move on, live the fun single life but when she saw that's what I would do, well she have that couldn't have that could she?
Do what I did, no one's telling you to go out and get drunk or laid, but join a meetup, dress up nicely, go out on some girls nights to clubs. Trust me, from my point of view (as a red blooded male) this would get me really get me curious. Get him to look after the kids also.
Evens he will come running back to you, even if he doesn't your putting yourself in a position to move on anyway.
