Here is a list of books that others have recommended in dealing with affairs:
Not Just Friends by Shirley Glass
Private Lies by Frank Pittman
Adultery: The Forgivable Sin by Bonnie Eaker Weil
How Can I Forgive You? by Janice Spring
Each of these resources focuses on overcoming the affair rather than let the affair lead to a divorce.
Best Regards,
Jeff Murrah
