Can you be just "friends" with her? My husband is cheating on me and continues to do so. He mentioned once to me that if we separated he'd want to stay friends. For me, I couldn't be friends with him anymore. I'd need to fall out of love with him so I could have a happy future with someone else. I wouldn't be able to do that if we were still calling/e-mailing/seeing each other. It's up to you in the end. You have to be prepared for whatever may come of your choices.
When you are happy as an individual, you are in a better position to determine whether a partner enhances your happy life or weighs it down.
