With All do respect Mr. Ohio, I can see your in a tough positon, however, to be honest, you asked for and started this life style choice. Sure you wife love and adores you, but my man, how long do you think that will really last.
I don't care what any of the guys on here will tell you, if she continues to have sex with this guy, or any guy for that matter, she WILL, if she has not already form a storng emotional attatchment to him, women are programed to do so with the men they are sleeping with, and she may not be just "fucking him" anymore, it may be deeeper than that, but don't think she will tell you that until it's too late.