Personally, I don't think I ever want this person back. To fear that it will happen again. A fresh start is something that is priceless.
I also find myself chatting to other woman and thinking, I could do this again some day and walk away with that "moment" smile on my face. That alone just made me smile. I guess as much as they're running from this, so are we. But right now we gotta stand fast, on what we believe and in and see this through.
So hold up on the divorce idea until you can do it with no emotions, when you know in your heart you have tried it all, when you know that reconciliation will not happen. I pray that I get there sooner rather than later.
Just cos things are going right, doesn't mean that they were always wrong.