I agreed with a pal to ask our wives if they would try a wife swap. Were all in our 60’s and have known each other for 50 odd years now. My wife at first was against the idea but after some thought told me she was up for it. In fact she was more up for it than I was. We exchanged texts and emails saying what we will do. I told my wife I wanted us all to be in the same room as it was thinking about her having sex with another guy which turned me on most of all and I wanted to see it as well as have sex with his wife. She said she would not be up for it unless we used separate rooms. I thought about it and convinced myself it would be ok. On the night all was going well until we all sat in the lounge of their house and my wife grabbed my mates hand and said lets go into the bedroom. It hit me then that it wouldn’t be ok. But I said I’ve got to go to the toilet first and asked them to wait for me to come back. I didn’t need the toilet but I needed to think. I made up my mind not to go ahead with it, but when I came out of the bathroom my wife and my mate had already gone into the bedroom. I shouted, “couldn’t you two wait,” but got no answer. So swallowing hard I went into the other room with my mates wife who was already semi naked. We kissed and started to have sex but I couldn’t maintain an erection thinking of my wife in the other room. I then told my partner I cant carry on with this. She said its ok, so we went into the lounge but I had to call a halt to my wife’s fun .They came out straight away. But they had had intercourse. I was in a bad place for months afterwards. My wife tried to reassure me that she loved me and when I asked why she didn’t wait, she said she thought as we had all agreed to go ahead before, it was ok to do so. I’m writing this 18 months after the event and it still hurts. I know I’m as much to blame, but can’t get the fact she was so forward out of my head.