I was married twice before my current wife. 1st cucked me royally. I was just out of my teens, and she was a couple years older than me. It was the early 70s, so the tail end of the 'free love' era. 2nd marriage, we swung a bit, but she was a ......, and easy when she was .......
3rd marriage, wife from Asia, very straight, very modest, and very sure she isn't going to have sex with others. About 8 years in, we ended up in bed with a couple. Great fun for all involved. From there, we started on mfm fun, which was good for me, as I enjoy watching my wife fucking and sucking, having cock breath, and cleaning up.
She was a bit of a flirt, enjoyed the attention from other men - great, I enjoyed seeing her 'bloom'. Still, for her, seemed this was 'our' fun, and something we didn't share with friends/family.
She has a childhood friend who lives on the other side of the country. This friend is hot, had large natural tits, and is always cheating on her husband, and seemingly making it so he finds out, and all kinds of problems ensue. She'll call my wife and cry on her shoulder, asking for advice. My wife got tired of hearing these stories, and being asked for solutions, so seems she told her friend some about our life (which did include some mfmf swapping at that point), and suggested she try that with her husband. Her friend didn't believe that I was ok with her fucking others, so my wife told her that sometimes I'd drive her to men's house for them to fuck, while I'd just watch, take pictures and videos.
To prove her point, my wife then produced video of her fucking a friend, while I videoed. Just so happened we met with him at a beer garden one evening, and my wife face-timed with her female friend kissing on her BF while I was sitting there.
So, she outed me to her friend, and surely her friend told her husband. I really didn't mind as I'd actually like for my wife to fuck many more men.
She also let on later that she'd confided to her sister-in-law about our 'fun'. No idea if she shared information with her husband, my wife's younger brother. Geez....
Neither woman has even said anything to me about being a cuck. I kinda wish the big titted friend would say something - I'd just have to let her know that my wife also directs me to clean the other man's cum out of her pussy afterwards.... (well, that would be a lie, but...)
(photo is of friend mentioned above. this is after they had been fucking, and were taking a break. I found, after diving in, he'd filled her with cum)