It was this time last year. I was sat at the bar with Oliver, having just eaten our works Christmas meal. There was a band playing and people were starting to dance as the barman poured us two double brandies. I asked Oliver what he wanted for Christmas. Although we had been work colleagues for several years I knew little to nothing about his home life or likes. Oliver looked around the room and then said, "I wouldn't mind that in my stockings," referring to a tall elegant blonde called Heather. He asked me the same question. I looked around and said either of those two pointing out two women the looked like twins. Oliver laughed then said, "You mean Valerie and Vanessa." I told him either one would do, or the pair would be even better. Oliver took a sip of his brandy and then slid off his stool and sauntered over to Valerie and Vanessa and was talking to them for several minutes. Then all three walked back to where I was sat. As Valerie was getting on the stool that Oliver had occupied he introduced us to each other. I gave up my stool to Vanessa and offered them drinks. At that point Heather came towards us and I grabbed her arm and introduced her to Oliver. Then the two of them went off to the dance floor. I chatted with the two women who informed me that Valerie was eighteen months older than Vanessa who was twenty three. I told them I thought they were twins. They laughed and said they were often mistaken for twins and when out with their mother they would all be taken for sisters. I told them that would be a sight for sore eyes. They laughed at what I had said. We talked a lot more, just a little about work and then on to sports. Both were quite sporty types and I was telling them that I played in a five a side football team and did a fair bit of swimming. The evening was just whizzing by and soon it was close to closing time. The girls went off to the rest room. Oliver appeared and told me that he thought he had scored with Heather. I knew he would as she had a reputation of having loose knickers. I told him I was going to offer the girls a lift home. Oliver just said good luck with that just as Heather joined us, and Oliver and Heather then left together.. Valerie and Vanessa returned with their coats and I offered them a lift home. Valerie was looking around and then whispered to Vanessa who giggled. Then they both answered yes. I drove them to the far side of town with Vanessa sat in the front next to me. As I stopped at the house Vanessa had directed me to, she lent forward to give me a kiss that I think she thought was going to be a peck on the cheeks. I was too quick for her and turned it into a full blown kiss and pushed my tongue into her mouth as I took a handful of tits into my right hand. Vanessa groaned into my mouth as I kissed her. As we broke for air, "How about that coffee?" I asked. Vanessa gasped, "what coffee?" I told her the coffee she was just about to invite me in to have. It was now that Valerie added to the conversation and invited me in for coffee. As soon as we were through the door I was back kissing Vanessa, only this time I had a hand under her short skirt and was rubbing her pussy through her panties. Valerie seeing her sister being fondled said, "I'll just go and put some coffee on." When we eventually broke our kiss, Vanessa led me through to the lounge and as she walked I stroked her arse. In the lounge she all but collapsed into a chair as her legs were about to give out. Valerie shouted that coffee was ready. I went into the kitchen to give her a hand. She was facing away from me and I snuggled into her back with hands that went around her to her tits as I licked and kissed her neck and ears and also nibbled on them. Valerie was now groaning. She was clearly enjoying the attention and groaned louder when I slipped a hand up her skirt to her pussy. Now it was my turn for a surprise, she wasn't wearing any panties and she was really wet down there. It took no effort to slide a finger deep into her pussy and then a second one. It was now that Vanessa joined us complaining that she thought I wanted her not her sister. I told her I needed to know which was best. They both asked who was best. I told them I hadn't had enough of them to know yet. With that Vanessa dropped to her knees and took my cock out my pants and started to suck me as I resumed sucking on Valerie's ears and fingering her pussy. Valerie gave a long low moan and then shook all over and almost collapsed as her legs gave way as she came. I grabbed her and lifted her and asked Vanessa where her bedroom was. She got off her knees and led us to Valerie's bedroom where I lay her on the bed and proceeded to undress her. Vanessa was undressing herself. By the time they were both undressed Valerie had recovered and had turned around and was now sucking my cock. Vanessa complained that the cock was hers and they were both trying to get it into their mouths. I told them to take turns and Valerie won the first turn. Then I told them it was Vanessa's turn. Valerie moaned as she gave it up to her sister. As they took turns they were taking all of my almost eight inches into their mouths, like it was a competition. I was getting close and didn't want to come just yet before I sampled some of their fannies. I told them to both lay on the bed with their legs spread. I was surprised how different their pussies looked. Valerie's pussy was quite open and had long dangling pussy lips, just right for sucking and also a large prominent clitoris. On her mound she had a thick triangle of dark pubic hair that clearly matched her head hair in colour. Vanessa on the other hand had a pussy the was firmly shut with just the thinnest crack to show where her pleasure site was. She was totally shaved of any pubic hair and her pussy reminded me a little of what a babies pussy looks like. I fingered both pussies, and Valerie's being already wide open my fingers were quickly back inside and frigging her. Vanessa's took a bit more stroking for it to peel open and reveal a smaller clitoris and a much tighter hole. It took a while for me to get one, then two fingers into her pussy. I decided that I wanted to try those dangling lips in my mouth and withdrew my fingers and replaced them with my mouth. I sucked the lips into my mouth causing Valerie to moan loudly. Vanessa took a look to see what I was doing to her sister as I continued to frig her pussy. Then I swapped and licked up and down Vanessa's pussy as I fingered Valerie's again. Then I'm not sure which one complained that I was still virtually dressed and then they both attacked me removing my clothes. Then I was forced onto that bed and a pussy was on my face. I knew it was Valerie's due to the long lips and I was more than happy to suck them into my mouth again. The girls were again taking turns at sucking my cock and I could feel the spunk rising in me. Then I exploded into one of their mouths. To this day I do not know who's. Then as Valerie moved a little I could see the two of them kissing and sharing my spunk swapping it from one mouth to the other, before they both swallowed some of my cum. It was so sexy to see sisters sharing my load that I managed to remain hard. Then Valerie's pussy was hard on my face again and Vanessa's pussy was slowly sliding down onto my cock. It was tight and I wondered how many men had been in such a tight pussy as I licked Valerie's pussy some more. Then the girls both got off me and swapped. Valerie sat on my cock and Vanessa sat on my face. Her pussy was much more open now, and it was much easier to suck her clit as it was more exposed. They were about to swap back when I told them I wanted both on their hands and knees so I could compare pussies. Moaning they both got on their hands and knees on the bed. I stood behind them and slid my cock first into Valerie's pussy and gave her about ten thrusts before removing my cock and doing the same with Vanessa's tighter pussy. As I fucked one I would finger the other. Valerie came first and collapsed onto the bed wriggling like a worm on a hook. I continued to finger her as I slipped my cock back into Vanessa's pussy. It was only a few more thrusts and her pussy tightened even more squeezing the cum out of my cock and she thrust back and groaned. Then all three of us were in a heap. A while later having recovered the girls wanted to know who was best. It was impossible to tell who was best as they both had so different pussies, bodies and techniques while being fucked. Valerie just pushed back at my cock, yet Vanessa would rotate her hips and leave the thrusting pretty much up to me. To keep them quiet I told Valerie that she had the sexiest looking pussy with her dangling pussy lips and large clit, yet Vanessa's was tighter. I told Valerie that she was the best kisser as she used her tongue more, and that Vanessa had won out in the cock sucking as she used her tongue on my cock even when it was deep in her mouth. They argued between them who was better, and then they were taking turns sucking my cock again and Valerie was demonstrating that she too could use her tongue with my cock in her throat. Once I was hard again they were taking turns riding my cock again and sitting on my face to have their pussies licked. I hadn't heard the door open or anyone coming into the room until the girls were changing place again. As one of them sat on my cock I suddenly saw Oliver out of the corner of my eye, just before a pussy sat back on my face. I heard Oliver complaining that things were not meant to go as far as fucking me, it was just meant to be a bit of harmless fun and a quick fumble. I heard Vanessa say that she bet he had more than a quick fumble with Heather. He tried to deny that he had done anything more than a quick fumble. It had now dawned on me that Oliver was married to Valerie and my cock was firmly embedded in his wife's pussy. Knowing Heather and her reputation, some from personal experience, I doubted very much that she would have stopped at just a fumble. All the time they were arguing, I was still licking out Vanessa's pussy and Valerie was still riding my cock. Then the girls climbed off and swapped places again. I just looked at Oliver with a big grin on my face, like the cat that got the cream. Oliver was still complaining to Valerie and she was giving as good as she was getting, and her pussy was getting some serious sucking with those danging lips in my mouth and sometimes the clit as well. It was all change again and this time with Valerie riding me for all she was worth I came deep inside of her pussy. Then there was another heap of bodies trying to recover. Oliver was complaining even more that she had let me fuck her bareback and had just cum in her. Valerie told him to shut the fuck up. As we recovered They again asked who was best in bed. I told them I wasn't quite sure yet and would need at least one more session with them to make my mind up. I could see that Oliver was clearly upset So the three of us dressed and Oliver all but pushed me out the house. Back at work on our last week before Christmas, I met up with Heather, in the canteen, and asked her how her night went with Oliver. She told me not as well as the nights we had spent together. She went on to tell me that when she sucked his cock he lasted just a few moments before he came on her mouth without any warning. She said she could forgive him that, but when she sucked him hard again, he fucked her for only a few minutes before coming again. This time in her pussy and no amount of sucking and playing could get him hard again. For that she couldn't forgive him. Later, Oliver was definitely off with me for having fucked his wife and even more so that I had suggested further sessions with the girls. He told me to stay away from his wife. An hour later I got a phone call from Valerie saying that Oliver was due to be out with mates that evening and did I want to continue my comparisons with her and Vanessa. You can guess what I told her.