my wife is a very attractive lady,early 40s and men have always fancied her.Nothing ever happened but a friend often implied he would love to shag her. One night we were at a party and she got a little tipsy,to the point where she was ready to throw abandon to the wind. I saw there were a few guys trying to chat her up and so I took her up to one of the bedrooms,we were getting down to it and I was in her fanny with my tongue which I know she really likes.She was laying on the bed just her top on .naked from the waist down,she was moaning with pleasure and I then saw my friend in the doorway with his prick in his hand ,wanking,I thought I have often dreamed of seeing her fucked by another man and here was the chance,I beckoned him over and indicated when I move away just slip your prick into her. I moved over and he had a prick about 7 inches and rock hard,he slid this into my wifes pussy and she just moaned ,I indicated to him to fuck her and she obviously unaware that another man had his prick in her pulled him closer and began to move her hips ,he was starting to pump away when she moaned obviously cummimg ,I was watching this and wanking ,it was the most erotic thing I have seen ,another man fucking your wife ,he then came inside her as he didn't have a condom , she was satisfied and rolled over and fell asleep. To this day she is still unaware that another man fucked her but I often have a wank when I think about it.