Forgive and forget, the old saying goes. But a new University of Tennessee study suggests that’s not always a great idea. Why? Spouses who are forgiven for negative behaviors are more likely to keep repeating them. In fact, the research finds that spouses who forgive their partners are almost twice as likely to report a repeated incident the following day as those who hold a grudge. So what to do? An expert in family therapy suggests spouses should confront negative behaviors and deal with the causes behind them before forgiving their spouses.