Certain instances of cheating can never be forgiven: Taking extra monopoly money while acting as the banker during a family board game night, using illicit vibrating devices to receive secret messages during a high-ranked chess tournament, and, of course, engaging in a secret relationship with your spouse's best friend behind your spouse's back. If you find yourself betrayed by any one of these, the only recourse is to ditch out on everyone you know and love, hit the gym, and start a new life.…