Sandi gave me another I idea. I could contact OM’s wife privately and present the cell phone bills. There is NO WAY a wife could look at those bills and not KNOW there is an A going on. I don’t have the money to hire a P.I., but she does. Of course, there is the risk that in a knee-jerk reaction she will confront OM with bills. Never met her so I know nothing about her personality.
I like this idea! I wouldn't leave the cellphone bills with her, tho. Tell her you think it's best that the illicit couple NOT know what evidence you guys hold, but you felt she should not be the only one of the 4 involved to NOT know what's going on, so that she could make whatever decisions are best for her and her family.
Hopefully, she'll use those records as the 'probable cause' to hire a P.I.