Just to set the picture, my wife, Vanessa, is in her 50s but has kept her figure very well. She ran keep fit classes until well into her 40's and has always kept herself very toned and invariably gets looks and comments from men. She has a certain way about her that attracts men like bees to a honeypot. If she is out with a group of her friends, it is always her that ends up laughing and joking with the men in the pub, especially the younger ones.

Despite all of this she has never ever strayed and remains totally loyal to me. I honestly believe that the thought of playing away has never crossed her mind. Something to do perhaps with her training as a nurse. She works in the local surgery and is quite well known in our town.

So, where is all this leading? Well a couple of weeks ago we spent a long weekend away in Bristol. Nothing fancy, just a nice hotel, some sightseeing and the inevitable shopping. On the Saturday night we had a meal in a nearby Italian, a few drinks the pub next door and returned to the hotel. There we decided to have a nightcap in the bar.

At the table next to us were another couple and, as often happens, we started chatting. They were younger than us, probably late 30s, early 40s, and fairly ordinary looking. To me he was very average (well what man really looks at another?) and she was quite pretty but a little over weight. I remember thinking what beautiful skin she had.

Well after a couple of drinks we realised just how much the hotel was ripping us off. A round for the four of us cost me £30! We had a few bottles of wine in our room (always come prepared!) and Vanessa suggested that we continued our chat there. It meant nothing at the time but, looking back now, I remember seeing Tom give Anne a knowing look as they quickly agreed.

Once in our room the wine was soon flowing and we were having a really nice time with our new friends. As with most hotel rooms there was a shortage of seats so I was sat on the floor, Tom on the small sofa and the women on the bed. After a while I became aware that Anne had somehow moved much closer on the bed to Vanessa, and was actually lightly rubbing shoulders with her. I expected Vanessa to move away but she seemed totally unaware of what was happening. I certainly was not and could hardly take my eyes of them.

Then came the defining moment. Anne's hand strayed onto Vanessa's thigh and my wife did nothing to remove it! Staring at her I could see her eyes were open wider than normal and her breathing was decidedly faster than usual. She seemed to be staring into space but at the same time managing to carry on with the conversation. As Anne's hand gently moved up and down on her thigh, I was aware that Tom was also staring at what was going on. From his expression he obviously knew what his wife was doing. I also became aware that I was sporting a massive erection!

Suddenly Vanessa jumped up. It was as if she had been thinking long and hard about a decision and wanted to carry it through before she could change her mind. "I'm really uncomfortable in these cut-offs" she said, "I am going to get ready for bed". And with that she grabbed her night things from the drawer and disappeared into the bathroom.

There then followed what I can only describe as an uncomfortable few minutes and Tom, Anne and myself struggled to make conversation in a rather electric atmosphere. That atmosphere became even more charged when Vanessa returned to the room. I think we had all expected her to be wearing a dressing gown, but no, my darling wife had obviously decided to make her intent blatently obvious and was wearing only her short pink satin nightie!

Returning to her seat on the bed, she made sure that she was really close to Anne, and almost snuggled in against her. Anne needed no second invitation and promptly returned her hand to Vanessa's thigh. This time a totally naked thigh below a very short length of nightie. For the first time Vanessa looked at me. She then raised her eyebrows as if asking my approval. Struggling for breath I nodded back at her.

With that she seemingly abandoned herself to Anne who gently pushed her back onto the bed and began fondling her right breast through the nightie. My wife, almost immediately, began breathing heavily and her face took on an expression of almost sheer lust and pleasure. I can honestly say that I have never seen her looking so sexually charged.

Obviously just as turned on, Anne tore off her dress, revealing a set of rather sexy undies. Although, as I said previously, a little overweight, she looked pretty damn sexy to me! She pulled down the straps of Victoria's nightie, exposing her breasts and nipples which she quickly started pulling and sucking. This put my wife in a frenzy. Her nipples have always been fairly sensitive, but this was a whole new ball game! She started writhing around the bed in a way I had only seen before when she had a really good orgasm. And this was just her nipples!

By this time Anne's hand had travelled further and further up my wife's leg and her nightie was now only a belt around her waist. Everything was exposed and Anne slowly, very slowly, allowed her fingers to slide onto Vanessa's shaven, and very wet, fanny. My wife froze, looked long and hard at me, then, with a huge sigh, visibly relaxed and surrendered herself to Anne.