What does OM do for a living if you don't mind my asking? Some of the more terrible OM's usually have a job where its required for them to get in peoples business. The spouse was the gatekeeper that opened that door up. Obviously OM and the relationship has turned the wife, that chit happens.
In my affair 10 years ago was powerful emotions, but I had resolve that while I was hurting my relationship that no one would be able to turn me to harming physically or financially my then wife. Believe me, some people tried to coerce me.
Remember in battle the best defense is a great offense. You play defense only, you will get hit.