I was once in a similar situation, except I was married to the guy and had 2 kids. I finally just packed my bags and went home to my parents in another state. As difficult as it was to be a single parent, it wasn't nearly as difficult as staying with my husband. Once I left, my stress levels went way down and not only was I much happier, I found it a lot easier to cope with the kids and my crazy life.

Also, I know this may sound crazy, but I think it's better to leave sooner rather than later. I waited too long to leave and by then, I hated my husband so much that when he wanted another chance, I just couldn't do it. In later years, I thought that if I had left sooner, before I had built up so much resentment, we might have been able to work things out in a second chance.

I had to laugh about the laundry comment above. After I moved, my new neighbor was also a newly divorced single parent. She once said that the only difference she noticed in her life after her husband moved out was that she had 2 fewer loads of laundry to do each week.