We had recently been told that our eight year old son needed a bone marrow transplant. Of course I offered to have the test. I thought it was slightly strange when my wife suggested that I needn't bother and she would have the test for a match. I had always thought that the more took it the better. Louise wasn't a match and I went for my turn. Then when the doctor said it was lucky that I was a match. I asked what she meant that it was lucky. It was when she said that parents were much more likely to be a match that it dawned on me and the doctor that I didn't know that I wasn't the biological father. When pressed she told me that I wasn't even close to a match to my son regarding being his father. When I got home I asked Louise who his father was. She tried to argue that he was mine. I had no intention of abandoning him but wanted to know how come I wasn't his father. Eventually she caved in and said that it was when we had been going through a rough patch and I had moved in with my brother for a month or so. I had thought he was a big baby for being so premature, or so she told me. I asked how long it had gone on and who the father was. She told me that she had no idea who the father was as she found herself taking on four men at a party and she had just met the men and never seen them since. She then decided that if she was confessing she would get everything off her chest. She then told me that it was far from her first or last time being serviced by several men at a time. I was really shocked as since that time I had been faithful and thought that she was to. I asked when the last time was and she informed me it was just two weeks back when I thought she was out with some of her mates. I asked how many and she told me that there was three of them and she met them for the first time in a bar. My wife was a slut big time, and I never knew. I must admit I got hard thinking about it and fucked her bent over the kitchen sink as she washed up, telling me some of the details. Afterwards I asked was she going to give it up and she was honest when she told me she couldn't. For the sake of the children I didn't want to split our family up. Then there was Josh and the transplant. The operation went well and I was pretty sore and sex was the last thing on my mind. Not so Louise, I discovered while I was in hospital she had again got herself fucked by several men, five in fact. She couldn't tell me what drove her to it or why she would let several men use her, all she could say was that she couldn't stop herself when the itch started and it only went away after she had been well and truly fucked. Then a few weeks later I could see that she was restless and followed her to a bar. It wasn't long before she left with five men and went around the back of the building with the men. I followed and saw her sucking and fucking all five men until they had finished with her. As they left I took my hard cock and went to her and fucked her as long and as hard as I could, almost like a punishment. Louise didn't feel that it was a punishment and told me to fuck her harder still. After that we would go approximately once a month and she would pick up a group of men and fuck them till they quit and then I would take my turn, before taking her home. I suggested to Louise that she finds a group of men and stick with them as it would reduce the risk on infections or worse aids as that had just started doing the rounds of gay groups. That's what we did. Louise would tell me which were the best fucks and I would ask them if they would like regular sessions with Louise. I soon had a pool of six men to service Louise. Over the next ten years Louise needed less and less help to scratch her itch and as men dropped out I didn't need to replace them. When we got down to two Louise selected James and we dropped the other man. Up until the virus Just James and I shared Louise and since the virus I think her demands has lowered further still. I'm pretty sure that should we get back to normal, Louise will no longer even need James. We'll see.