I found out when we got a very big telephone bill, and it was all down to one mobile phone number, only ever called when I was out of the house. When I called the number to see who it was, in case it was one of my young children calling 0898 sex lines, and asked who it was this horrible male voice started to laugh at me and said "Why don't you ask your wife, loser. You're pathetic." When she got home and I asked her who the number belonged to she said it was her boss. That was how I found out. Re your other question, no, I'm glad I found out and didn't end up with such an awful wife. You'll see why when I post my next story about discovering a plot between them to kill. I found out just in time I would say. Would not have been here now to write about it otherwise.