What about ex husbands?

Are there any cucks who's wife's are ******** with their ex's? My wife has been ***** off and one with hers for a year now and its still hot. love it. so does she. She was so hesitant for years but finally gave in when he became single and started flirting with her. She laid down the ground rules and they been fucking like rabbits since. He gave her 3 kids so he has more right to be in her than I do. He lives south of us and if he works up by us, he'll crash at our house for a few days to a week and I'll stay in the guest bed while he lays with the wife. Anyone else got a setup like that?