I hope you all get through this and are successful. But I'm moving on. I've given up hope. Take care.
Never make permanent decisions on temporary emotions. Give yourself a couple of days before you make that final choice.
Although now you have a very clear boundary to communicate to him; you don't want to be in an open marriage, so as long as he is seeing her, he doesn't come over to the house except to pick up and drop off the kids.
You might be surprised at what happens after that...
Me: 44, Wife: 39 M: 17 years T: 20 years Bomb on 08/25/09 1/13/10: MC started 1/28/10, 2/8/10: More bombs 8/28/10: Wife moved out No talk of D, no movement