Helping a Friend Move On After a Breakup

Married bi guy. 33.
I started dating my wife at 15. Her year older sister stated dating a guy. We all got a long great. They got married then we did.
Curt. And I really hit it off. He was a quiet softer guy to my loader masculine style. But we got along great. He and I started hanging out alot.
I had played with boys in my neighborhood at a young age. A few years after getting married. I started stopping in gloryholes to get sucked off occasionally.
Fast forward about 15 years. My wife told me one night that her sister suspected Curt was messing around with men. A few months later. She found messages on his emails. He was busted.
She told him to move out.
Curt called me telling me he got caught having an affair with a woman and wanted help moving his stuff. He didnt know that I knew the truth.
I told him I would help how ever he needed but I wasnt taking sides in there fighting. Obviously my wife was taking her sisters side.
The day he moved out I went to there house to help him move.
It was just me and Curt.
We had a couple beers when everything was unloaded. With the furniture and bed in place. He started telling me his version of what happened but he kept saying it was a woman he got caught with.
I'm allways a shit starter. So I set down on his couch. I told him I heard his wifes description and he was caught sucking a guy off. He denied it and finally I just told him. It's ok. I dont care . He just kept arguing. I finally got his attention and told him I stop at the gloryholes to get my cock sucked once in awhile. He didnt believe me and kept arguing.
I stood. Kicked my shoes off then started pulling my pants off. He was stone quiet watching me. Then I set back down and he asked what I was doing .
I laughed and said I'm waiting on you to suck my cock. And that's how it started about 5 years ago.
He got back with his wife but me and him play everytime we can. Our wives think we are just good friends doing what we like. We dont go to half the sporting events we say were going to. We are somewhere playing around. Hes a masterful oral sub and I've taught him to bottom when we can.
We dont send emails.
But with us being best friends we talk all the time.
It works out great for us. And our wives dont suspect a thing