I'm having a hard time finding any threads about your sitch, but as far back as three years ago, you were posting on here that your wife had already had multiple affairs. If you knew this was going on, why did you tolerate it? You were even posting to another guy for HIM not to tolerate it, telling him "it wouldn't work."
Unless your stuff is on another forum, I'm not seeing where you've ever seriously worked at this problem. Sounds to me like your wife did what you let her.