I would like to tell you about our unusual arrangements. I was twenty four when I met Valerie (Val) and two days later when I met Vanessa (Nessa). They were sisters that were born eighteen months apart. I was going out with Val, but soon found that Nessa was far bubblier and spontaneous than Val. I was soon cheating on Val with her sister whenever the opportunity arose. As far as Val was concerned, I was sure she didn't know. Then Nessa met a man and decided she was going to marry him. He was nearly ten years older than her, and their father disapproved, but she was going to do it anyway. I was now twenty six and most of my mates were married and several had kids and I was feeling like I was missing out, so I asked Val to marry me. We had a double wedding and it was a fantastic day. I had got together with Nessa's chap and we even fixed up a double honeymoon. No don't jump the gun, we didn't swap or anything like that. He was extremely well off and had a high flying job in the city. Then we were back to reality and married life. It wasn't long before I saw cheating on Val. As much as I love her she is rather staid and straight in bed, and bed was now the only place where sex occurred. I was doing pretty well at work and we were comfortably well off. I had become a manager of one of the departments. Nessa and her husband were living in a huge house in the country and we only saw them occasionally. Nessa had absorbed herself in country life and joined the horsey set and village things. Val and I soon discovered that she was unable to have children and to my surprise didn't seem worried or upset. I spoke to her about adoption and she just wasn't interested. Then after another promotion I had my own secretary. I joked and flirted with her quite a bit and then the inevitable, we started an affair. I know I'm a dog, I just can't help myself. We worked an early shift and my staff prepared work for the next shift to do. I would get in for four a.m. and I usually got home between ten and midday. which meant I could see Val in the afternoons as she was now just working mornings. At work Janice my secretary would often be laid across my desk with her panties around her knees or ankles with her arse just waiting for a slap and then a quick fuck before anyone else came into work. This went on for years. Then when she was leaving she trained her replacement. It wasn't long before she was bent over my desk. Sex at work was far more exciting than at home. With Val it was a quick playing around and fingering, quick fuck, usually with her on her back and then sleep. Eventually I was on my third secretary and was flirting with her, but hadn't got any further. Then we got some bad news. Nessa's husband had a massive heart attack and didn't survive it. The funeral was weird, there was just ten of his so called friends. At the grave side instead of throwing earth on the grave they threw Fileofaxes. Nessa and Val agreed they should be in contact more often as always happens at funerals. Over the weeks that followed Nessa wasn't doing so good so Val asked her to come and stay with us for a bit. It must have been a huge changes from village life and her huge house to live in a three bedded semidetached on the edge of a fairly large town. I tried my hardest to keep my distance from Nessa as it was too close to home if you know what I mean. One night Val asked had Nessa done anything wrong for me to be standoffish. I told her no I was ok with Nessa and made an effort to get a bit closer. Val and Nessa seemed inseparable, and went shopping and socializing together which left me feeling a little out of things. Then they told me that they had found a new house for us. I couldn't see what was wrong with the old one, but got dragged to look at it. This was a change from what I had expected. I thought when Nessa was fed up with town life she would go back to her horsey set and way of life. Now it seemed that we were to become a family of three. I wasn't too upset when we moved in. Nessa had split all bills with us and had sold her country house. It was a large four bed house with a little bit of ground and was better than what I could have afforded on my own with Val. I was struggling with my sex life, Val was her normal vanilla self, and I wasn't getting any on the side. Other than that, I thought that everyone was happy. Then I heard Nessa crying several mornings as I left early for work. I told Val what I heard and she said that Nessa was still missing her husband, especially the sex thing was how Val put it. I could feel my cock twitch. A few nights later my wife lay tossing and turning in bed. I needed my sleep as I had work, but she wanted to talk and what she told me shocked me. She suggested that to help Nessa out I should sleep with her. I tried to play shocked until Val said, "Well it's not as if you haven't slept with her before, is it?" I was shocked that she knew then she continued. "If your still banging your secretaries, you could give them up to help Nessa." How the hell did she know about the secretaries that I fucked. I found myself stammering which I never ever do. She told me that she had found condoms in my jackets before taking them to the cleaners. I was caught as there was no need for protection with Val. I spent the day at work thinking about the prospect of getting into Nessa's panties again. It wasn't as if I was getting any anywhere else and now just over fifty I was struggling with the chase. That night I asked Val how it would work and she suggested that we had a family talk. Imagine how weird it felt talking to my wife and sister about fucking her sister. Neither of them seemed phased by it and openly talked. I was told if this was to work no more secretaries or odd flings. I agreed. Then I asked how was I to know when I was meant to be with Nessa or Val. Val told me to leave that to them. Val did set a few house rules the main ones being no sexy in the shared areas and no bed hopping, whoever I went to bed with that was it for the night. She didn't want me sneaking in for seconds with the other sister. Otherwise it was pretty open. That night Nessa claimed me and took me to her room. It had been a very long time since I had last been there. I had gone three days without sex and was ready and more than willing. Nessa is and looks just like a slightly younger version of Val, but how different they are in bed. Val is a one position woman that I have to coax to do anything other than missionary and oral is not welcomed. Nessa loves to suck cock and as for position, her favorite is riding on top, but any positions good as far as she is concerned. We tried three different ones that night and at work the next day both my secretary and one of my workers mentioned that it looked like I had been up all night. If only they knew how true that was. It felt strange that night sleeping with Val or should I say making love with Val. It was almost like she was competing with Nessa and we not only fucked twice, most unusual, but the second time was in doggy position. That was something we hadn't done for probably ten years. The first few weeks I was bushed as they both wanted my attention and there wasn't a night where I hadn't fucked one or other at least once in the night. Then fortunately for my poor over used cock things quietened down. It had been a particularly good year for me both at work, another promotion, and at home keeping two women happy. The rule of keeping sex to just the bedrooms was hard there were a few occasions where I would have liked to have taken Nessa on the couch or over the table and one time I fancied taking her out in the garden, but I restrained myself not wanting to ruin a good thing. As for other women I hadn't even looked let alone touched. Then one morning I was going into work late and Nessa was giving me a blow job to send me on my way when Val walked in on us. She had assumed I had already gone. As I lay there enjoying the sensations Nessa was giving my cock, I suddenly saw Val just stood there. She was there for several minutes just watching and then she quietly left us to it. That night in bed Val asked if I really enjoyed blow jobs and when I told her all men do she gave a big sigh and then went down on me sucking my rapidly growing cock. We were soon in a sixty nine position licking and sucking each other. I couldn't remember the last time we had done that, probably when we were courting. She was soon nearly as good as Nessa at blowing me. Sex with both of them just seemed to get better, less frequent but better. It almost felt that they were competing, without competing if you know what I mean, to see who could please me the best. Eventually the rule of no sex in the communal areas was broken. It was broken by Val who rode me on the sofa. After that anywhere seemed fair game and the two of them often saw me with the other one. In the garden was great and my favorite. We have a concealed garden with only one small spot that can be seen from the road or a neighbors bathroom window. I am now sixty six and still having regular sex with both of them. The frequency has definitely slowed up, but the quality is still great. The rule of sex with both of them in the same day still applies, and the chance of both together has never been on the table, mores the pity. But who cares when you have two willing loving women looking after you. Even before covid I was in my bubble with the two best women I could have ever found. Long may it last.