First of all, you should know that it is normal for a man to find a confidante! Men look for an affair for sex, while women look for emotional sustenance. It's all his fault that your buddy found a pure girl. You must first know that the present society is a material society, and you can't do anything without money! This is a real problem!
I'll give you a bad idea and ask his wife to strictly control his pocket money. Besides, you should tell him that you and other buddies' wives confiscated your pocket money and private money.
Although it is easy to be seen through, it doesn't matter if it is punctured.
Discuss with your buddy, if you are stabbed, find a hotel you often go to and have a good drink. When you have finished drinking, say whatever you want! It doesn't matter. Anyway, if you drink too much, you will forget things.
The progress and result of things depend entirely on the feelings between you!
The above is for reference only.