I'm not sure there is anything better than sloppy seconds..
My wife came in last night and sat on me and as I was inside her, she told me all about the guy she just fucked. Sooo damned hot. He barebacked her and came in her too, not an hour before.
I'm not in to the whole 'cuckold' thing as far as being insulted, etc, and I have to say that I'm straight but watching my wife with another guy is crazy, crazy hot.