Renee,
Your xh did have a relationship w/this woman, even if it were only for three weeks. His relationship was both emotional and physical....

Whatever her motives are, be it just being a friend or actually getting revenge, you do not need this woman in your life right now. You need people who are positive and are not bringing gossip back to you about your xh. You cannot move on with this type of gossip going on most of the time when you are w/her.

Meet up with some of your church members, do something different w/your time. Yes, I know you work odd hours and are tired, but you know what? One step at a time and when you do start doing something different, your whole attitude changes and you start looking forward to each day.

Start taking back the control over your life...leave people on the curb who are bringing you gossip and keeping you focused on your xh...it's not healthy.

Sit quietly, the answers will reveal themselves when you least expect them to.
The past is gone, the present is a gift and you need to focus on today, allow the future to reveal itself when it is ready.