I fantasized watching my wife having s** with another man. My wife agreed to do it with my good friend, who she likes. He’s single and popular with the ladies ; my wife is very attractive. We’re in our early 30’s, been married 5 years. Because he lives in another city, we get together for weekends every couple of months…it’s been working well for about 3 years now. Problem is, I found out recently that they’ve been having an affair since long before we were even married. I feel like an idiot chump…should I divorce her?