What is the most exciting sexual act watching your wife do with another man?

[funkyfitter]

I love every aspect of my wife being with another man, from the initial flirting to the moment she cums to the moment he cums in her.
My two favorite things are their passionate kissing and her being g fucked from behind while they both look at me.
That deep tongue twirling kiss is the moment that my wife is telling her man, Yes ! You can fuck me !
Then when he's got her bent over and is fucking her hard and deep, he sinks his cock into her and erupts with a big blast of warm jism while looking me right in the eye !
It's truly a moment of complete helplessness and blissful satisfaction at the exact same moment !

[Bryce 69]

it more sexy to watch the build up to him cumming in her
her displaying for him flirting
her kissing him deeply her nipples getting hard
him stripping her seeing how wet her pussy is for him
her worshiping his cock and balls
The Bull taking the slut who surrendered to him and satisfying his desires

[AmyRich]

A few years ago my wife hooked up with a travelling businessman who said he was going to give her a facial. She usually doesn't like that but surprised me when she smiled at him and said "Sounds like fun". He has been visiting and giving her facials for about 4 years now.

So the most exciting sexual act for me to watch is her on the floor, sitting up with her mouth eagerly open, looking into her lovers eyes as he stands over her and jacks-off into her mouth and all over her face.