I hope you can forgive bad formulations and mistakes, English is not my native language.
I have shared some of my cuckold experiences here before. As I mentioned before, I was fine with my old friend Karl cuckolding me, after he beat me and won a bet on our usual sparring matches. Karl is an army buddy, who I can trust, otherwise I never would have suggested it. I never wanted a group of guys fucking my wife in front of me. Well It happened anyway. And here is how we ended up there.
So my army buddy Karl and I sometimes bet on our sparring matches, once in a while we even bet nights with our SOs. Karl is better at hand to hand combat than me, has been since our army days. But he is not that much better, so I can’t beat him. It just seems like whenever we bet our SOs, he gains extra motivation or drive. I have not been able to beat him, whenever we bet. As time went on Karl grew more dominant in our cuckolding sessions and my wife enjoys his rough and dominant approach very much once in a while. She also enjoys new experiences however. That is how we started swinging/ partner swapping and drifted into cuckolding in the first place. Another thing I have not mentioned before, Karl and I train with some people from our army days and even do group sparring on occasion.