I am so sorry that you are hurting and that you are in this situation. If your ExH is no longer with the OW, I am sure that reality hit them and he was miserable. Unfortunately, alot of people give up on their marriages too soon when affairs occur and the divorce happens before the WS gets out of the fog.
How did the conversation with your husband go?? Do you two have children together?
I never say never, there are some posters here on this site that have been divorced and remarried to the same spouse. The WS "wakes" up and realizes that the grass is not much greener on the other side. Any issues that he may have had in your marriage most likely resurfaced with the OW, they never go away until the WS chooses to resolve them, but get covered up in the excitement of the affair.
Have you had a chance to look at all the articles on this website, learning about "Emotional Needs" and "Love Busters". I too, thought my WH and I had a happy marriage, but now realize that it was barely surviving.
Another good website you may want to check out is called
www.rejoiceministries.orgclick on the Charlene Cares link and sign up for her daily devotional. Read the articles on that website. Charlene and her husband divorced and then remarried and have committed their lives to help repair marriages.
To catch the eye of those on this website that have divorced and remarried the same spouse, you may want to change the title of this topic. (This can be done by clicking on the "Edit Post" icon on your first message).
You may want to change it to something like:
"New here, reconciliation to ExSpouse possible?" or something to that effect.
Again, I'm so sorry for your pain, its obvious you still love your ex a great deal.