You see you can't really talk to a wayward, they have their mind made up. It starts as a "lifestyle" with the one on the side, they lie to the LBS,and they get better and bolder with it. At the end they may go onto the affair partner.
What can wake these guys up is something to really shock their realm. Its why I said "affair bursting", it has had good success on this forum, and sometimes with them getting into various troubles.