Hello, This is my first post so bear with me. I can be a bit of a rambler. Well my wife and I have been together 9 years and married 6. Almost all.
Are you ok seeing him with another woman?. it's not hard to find the girl I was with was one of his best friends wives so that was easy for us.
If your fantasy is to watch your wife have sex with another woman, then you can tell her about it. Sit down in a non-sexual environment and talk