I am intrigued by this lifestyle

The wife and I met when we were both 17 just before our 18th birthday, a sweet church going Catholic girl she was, I Itook her cherry when she was 19, we married at 21, two kids at 28 and 30 and she was 35 when she went with her first ever other guy, and did she ever take to the life stile, here is a typical session for her.
A rather exciting time with my wife at a straight party.
The wife and I were at a day time straight party of friends of ours, I had gone off talking to some of the guys and after a while I noticed the wife talking to a guy and they were looking over at me every now and then, it just seamed a bit funny the way they were chatting, finally the wife caught my eye and signaled that she wonted to talk to me so I wondered over to her and the guy she was talking to, he stood off to the side looking a bit sheepish as the wife told me that they had the hot?s for each other and wonted to have it off if it was OK by me ?which it was? but they could not think of a place to do the deed as the house was full of people who were also wondering around outside at times, I told them I would have a look around and see what I could arrange!
After looking around the only place I could find was one of the two bathrooms which was not being used very often and suggested that if they were to go in there and I was to wait outside and if any one came to use the bathroom I would tell them that my wife was inside with a small problem and direct them to the other bathroom, they agreed to it.
When it was all clear the wife and the guy slipped inside ?and I waited outside knowing what was going on inside?, a few people came to use the bathroom but I steered them to the other one no trouble at all, while I was waiting outside at one stage I could hear a funny clicking sound coming from in the bathroom that I could not work out, after a while they knocked and the wifechecked it was all clear and they came out and we rejoined the party,
I never did get to know the guys name but who ever he was he went and got a beer for us and a soft take for the wife and rejoined us, he could not get over the idea that I had not only said OK to them doing the deed but had willingly stood guard while they did it, and then was standing there as calm as could be talking about it, I bought up the clicking noise I heard and they explained that he was doing her doggie stile as she hung onto the hand basin and she had a large bangle on that was clicking on the sink as he was fucking her, different! As we were talking the wife said she could feel his spunk starting to run out into her knickers and that I was in for a good time when we got home, and was I ever lol.