What Should I Do

My cousin and I while growing up we schooled together, so did my wife! My cousin and I would duck school now and then, and after smoking some good weed he askes me if I have any porno? I did and got working on getting it on, while watching the movie he pulls out the thickest cock I've ever seen with a huge head way bigger head then mine! And he was circumcised am uncut but skin pulled back I guess due to all the wanking I was doing, banana shaped cock but mine was way longer then his am 9" now so back then probably a nice 8" or so. He tells me to wank mine and let us come together while watching the video I shot loads of sperm all on the toilet paper and he smile and starts coming too I guess but I didn't watch, I got up went and smoked some more weed. When I got back I see that he moved my sperm fill paper, we did it again and everytime it got hotter lmao anyway enough of that, to bring you up to date my cousin hitted on my wife in our schooling career. But nothing happened with them. Few years later I end up marrying her, best sex ever we happily married have kids but we very kinky in bed so we have dirty conversations and I bring up my cousin telling her I saw his cock and started to feed her details as we would sex it up,. She is horny for him she wants cock she wants to try his fat thick circumcised Cock. His leaving for work to another place and I don't know what I should do all those years talking about him telling her I'd bring him for you to have sex with and hearing her tell me how she would suck him clean suck his balls even play with his ass while being fucked me missionary style I have never tried sharing before don't know what to think of it or do I need please with this one.. Has anyone done or went thru something like this thinking about it makes me so horny please don't feel sky to share your experience with me. Hope to hear from you