I think for us it was gradual. At first she was always going over to his place while I was at work. I had to ask her to bring him to our house and use our bed. After that, I asked her to have him come over one evening and they could go to the bedroom while I stayed in the living room. Then I got to watch, but I had to be caged. When they weee done, she left the cage on me until morning. Soon I was caged 24/7.
I think the biggest humiliation that she was enjoying it, the 3 of us went to a nice beach (couldn’t wear the cage there). While there she was obviously with him and another couple came up to us. They noticed our wedding rings but she was definitely with him and I was the third wheel. The other wife asked my wife why she was doing this. My wife responded, ‘I love my husband but look at his cock. It is really only good for his hand.’ Everyone looked at me and I got hard. The other lady laughed and said ‘I see what you mean.’