I met my current DH before I was divorced from my ex. I want to say first, there were no children involved.
My ex cheated on me throughout our entire relationship. I had gone into the hospital for a ruptured ovarian cyst, and while I was there, he moved his female partner (Chicago police officer) into our apartment. Changed the locks and everything.
To add insult to injury, my ex would not accept the divorce papers. He made things very difficult. I think he just wanted to keep me on the backburner in case things didn't work out with this "new" woman.

So what should have been a very simple divorce dragged on for months.
I went to a party with a friend and met my DH. We exchanged phone numbers, but to be honest, I really didn't care if he called or not. I didn't want to get involved with anyone. Well, he did call, and we ended up talking for four hours. We started dating (long-distance for the first 8 months), and the rest, as they say, is history.
Now that I have 3 little girls, and I am considering divorce, I doubt I would date again before the divorce was final. Things are much more complicated now. I have 3 little ones to consider.