I think you may be missing the prime exposure candidate, if you choose to go that route, and it's the girlfriend of the OM. If he's involved with someone and is messing around on her and your wife has said he just wants to be friends since you know it means he's WORRIED his GF will find out. There is your best chance to break up the affair.
Again, it may backfire, but if he has a GF, he's probably just involved with your wife because he CAN. Just be prepared for the backlash and possible damage it may do to what is left of your marriage.
Again, just my opinion and don't do it because I (or anyone else here) says, you need to make the decision for yourself.
and I agree about the martial bed. My wife chose to move to the couch and if she had asked me there would have been NO WAY I would have. If she doesn't want to sleep in bed with you then it's sofa city for her.
I thought about that. But I don't have the means of getting the GF's number.
As for the marital bed, my wife is willing to sleep in the same bed with me. It's just tough sleeping in the same bed with her knowing she may have been intimate with someone else just hours earlier. But you guys are right, I shouldn't give up the marital bed.