I had been married to Heather for almost thirty years when one day she complained that we never had spontaneous sex any more and that the few occasions we did have sex it was boring. The other issue was due to my health issues I had to use Viagra and even then it didn't always work. I couldn't argue with what Heather had said that we would try on a Saturday evening to make love, when I could get it up. I decided to see if I could perk things up for her. On the Saturday evening I took Heather to a dogging site I had heard about. We sat in the car with our lights out. It wasn't long before several cars arrived and one of the cars had a woman that sucked off three or four men before most of them left. Watching this had clearly excited Heather. Then I had Heather in the back seats and had the best hard on that I had in years. Heather was most appreciative of the fucking I gave her that night. Coming up to the next Saturday evening Heather asked if we could go to the dogging site again. Again there was a lot of cars, more than the previous time. There was two women sucking the men and one got out her car and fucked two of the men, before they all slowly started to leave. Heather and I were soon in the back seats fucking like mad. Then Heather suddenly told me that we had an audience. There were two men looking through the windows watching us fucking. Heather and I both came harder than we had in a long time. We dressed afterwards and the men were still hanging around as we got out the back of the car and into the front seats. One of the men complained that I had kept Heather all to myself and couldn't I share. I was pleased that they would want a piece of my fifty two year old wife. I was just going to drive away, but Heather told me to wait and rolled her window down. In a flash she had two cocks thrust towards her open window and I was shocked, stunned, annoyed, amazed and excited amongst other emotions as Heather took one then the other into her mouth. Neither man lasted long and Heather was soon drinking two mouthfuls of cum. Back home I was still excited and we managed to fuck again. That was our first time to fuck twice in one night for about ten years. Next morning I awoke to a woody. Another first for me in many years. Heather wasn't complaining. After another good fucking we lay talking. Heather told me that the last night had got her very excited being watched and she had thoroughly enjoyed sucking two unknown men. I almost got hard again. I asked how far would she have gone. She said sucking cock was the furthest she would go. We had several more sessions and each ended with Heather sucking two or three cocks and me fucking her again when we got home. Then my health deteriorated and I was struggling and not just with sex. I could see Heather's frustration and after a lot of inner struggling I decided to take her to the dogging site again. We watched most of the action that was taking place and after most had left, one of the men that Heather had sucked came over to our car. He seemed surprised that we were not in the back seats fucking. Heather rolled the window down and Kevin was quick to stick his cock through the window. As she sucked him I got out the car and was talking to him. He asked why we hadn't been there fore a while and I explained that I hadn't been well. Then I asked him if he would like to fuck Heather. In just a few moments they were both in the back seats and Kevin was busy undressing Heather. Then he was down to business and pounding Heather long and hard. Two more men came over to watch. Wen they had finished and dressed Heather got back into the front seat and as the men complained that they hadn't had any of Heather she sucked both of them off. Back home Heather was like that cat that got the cream. She was stunned that I had allowed her to fuck Kevin. Over the next few months Heather fucked Kevin about twice a month and also John who was a regular that she would suck. My health was now improving slowly and I would get a hard on watching her being serviced by Kevin and sometimes John as well. She also had a group of about eight others that would turn up for a blow job. Heather was the happiest I had seen her in ages. Then after one of the sessions back home I managed to fuck Heather's wet cum filled pussy. It didn't last very long, but I was pleased to add to the sticky mess inside my wife. Over the next six months I continued to improve to the point that I could fuck Heather before and after Kevin and John had their fill of her pussy. Then one day she suddenly announced that Kevin was moving in with us. He had lost his job and his home. Whilst Heather would always sleep in my bed with me, Kevin would take turns withe her whenever Heather was up for it. During this time we had stopped going to the dogging site as Heather was being well serviced and said she was happy with things as they were. Sadly my problems returned and I could no longer get an erection and I was too ill as well as upset to take Heather out dogging. Kevin took her for me and she would tell me everything when she returned. She would still only fuck Kevin and John, but would suck as many cocks as were presented to her. She would also allow them to tale her tits out and finger her pussy, but that was her limit. This lasted for nearly two years. In that time Kevin had got back on his feet so to speak and had moved out but continued the trips to the site with Heather. Then suddenly one day she said she had finished. She had turned off of sex altogether. Even with Kevin pestering her she refused any further sex with anyone. That was now four years ago and Heather is still not interested any more.