My wife and I were going as hard as we had ever had. Both of us naked, on a bed (still didn't quite know whose it was) and I was on top giving her a good pounding. We were putting on a show for a bunch of (presumably) Uni students. Originally it started out just for us but now it was us and our "audience".
This started about six Fridays ago when my wife and I attended a bit of a party in a house rent by some students who attended the local university. My wife had some connection to a girl who went to the Uni (I think) and I reluctantly went along. We didn't know anyone and I don't think my wife ever caught up to the girl with said connection.
I immediately went and found a drink. I wasn't one for mingling but on that night I was horny as hell. I made some small talk but then persuaded my wife to check out the upstairs of the house -- away from the party and music. I'm not sure if she knew what I had in mind but she happily went along as I took her hand and lead her up the stairs.
All the bed rooms were unoccupied and most were obviously Uni student bedrooms (cluttered and a bit disgusting). There was one however that was quite plain and seemingly not in regular use. There was an old bed and the door was sagging on one of its hinges.
I started pawing at my wife and if she didn't know my intentions before, she knew them now. She had already had a couple of drinks and readily accepted my advances, which was a bit surprising as she was usually a very strict -- at home, in our bed -- kind of a lady. (Although we had done it in the handicap toilets of my work one evening several years ago).
Suffice to say, we were quickly (mostly) naked and I was on top of her ready to insert my cock into her waiting pussy. While we were both in our early 40's (and therefore well beyond the ages of most of the Uni "kids" downstairs), our sex life was only getting better. We were still in great shape, which probably helped. She let out a small yelp as I went inside her. I started off slowly despite my urges and soon found a nice rhythm. My wife was soon lost in our love-making. Out of the corner of my eye I noticed something and then (yes?) a sound. It seemed that someone else or others had also ventured up-stairs and we standing in or close to the doorway taking in our risquΓ© behaviour. I thought that this for sure would rumble our night but surprisingly, my wife looked me directly in the eyes as if to acknowledge that "she knew that I knew" and was happy to carry on. We both finished very hard that night.