No one can be calm about this double betrayal of friendship and love. So what I suggest here is that you don't have to live with a piece of qingqing grasslands. If it's too depressing, just bravely bring it up and end it with the other party.
Treat love instead of abuse.
As people who eat melons, we watched many stars, which led to the change of marriage. While eating melons, it also gives us a wake-up call, but when a relationship exists in name only, there is no need to stick to it.
Your friend betrayed you, and so did your wife. This double betrayal from friendship and love is undoubtedly a heavy blow, just like a heavy punch in life, which will beat people to pieces. Now that your wife and your friend have done such a thing, it is obvious that he doesn't love you.
Why do you have to face a person who doesn't love you and deceive yourself? I don't think it's necessary for strange bedfellows's marriage to exist in name only. Even if there was a lot of love between two people, now he doesn't belong to you.
Emotion is the cornerstone of marriage.
A marriage without feelings is an empty shell, and the other person's feelings for you are actually a farce, which can also be regarded as a deception in acting. Your wife is perfunctory now, and she may have more skeletons in her closet.
Since he can have an affair with your friend, it means that your marriage building has lost its foundation, just like a castle built in the air, it may collapse at any time.
In order not to let things get out of control, I think we should make a quick decision and cut the gordian knot.
To sum up, one cannot walk on two legs. Everyone should be responsible for his marriage and family. Since the other party has chosen betrayal, there is no need for us to tolerate this betrayal.