I think Suzanne spent her life with Barry because she believed it was the righteous thing to do. She fell in love with him as a young woman, and he cared for her and never left her side during her first bout with cancer. He wanted children, but put that aside because Suzanne was not expected to be able to conceive after treatment. And they were blessed with two daughters. As religious as Suzanne was, she may have felt that this was her path. When she became so unhappy in her marriage, she may have felt she was going against God’s master plan. But she also was a child of divorce, who saw that people can find happiness with a second partner. I am sure she was very conflicted about her affair, but it did remind her that she could feel that spark that was gone for a long time. JL was her catalyst for knowing she should move forward to a life without Barry.