I had started going for Ballroom dancing lessons. At twenty two I found it hard to chat up girls and thought if your dancing with them it would be a start. On my second session There was a girl just younger than me on her own and when the instructors told us all to pair up there was just her and I left, She was quite nice so it was no hardship. I soon learnt her name was Tiffany and later learnt that her mother was also there and her name was Dorris. Well I was getting on better with Tiffany than I was at dancing. She was far more advanced at dancing than I was and suggested that we practiced outside of classes together. I started to see her at her house and would practice with both Tiffany and Dorris, I soon discovered that Tiffany's dad had left with another woman and the two of them were on their own. Then one night after lessons I did some extra dance moves with Tiffany in the back seats of my car. From then on We were partners not just on the dance floor. Then there was a shortage of men at the lessons. A couple of the older men had passed away and couple more of the younger ones had moved or just left. The women were scrambling to get a partner. I was telling a mate about the lack of men or the surplus of women. I think that did it for him and he started to come to the lessons. He was two years older than me, but looked and acted a lot more mature for his age. He was pounced on by lots of the women, but settled with Dorris. So week in week out we would meet with Tiffany and Dorris in the lessons and afterwards I would give Tiffany some different kind of lessons in my car. Then there was a bit of a revelation when Tiffany and I found that my mate and her mother were also dancing out of lessons. It certainly put a new light on Dorris and I came to see her as a sexy vibrant woman with needs. My twenty four year old mate was banging my girlfriends forty something mother! It went on for weeks. when I was seeing Tiffany my mate was seeing her mother. Then he was put on some sort of rota at work and couldn't always go to the lessons. I turned up to collect Tiffany to find that she had been poorly for a few days and had decided to give this weeks lesson a miss. As my mate was not able to go this week Dorris suggested that I take her instead. Seemed a sensible idea. The lesson went well and I learnt a few new moves. Dorris could dance well and she danced close with me and I could feel us touching in various places during the evening. I was missing Tiffany and what we would normally do afterwards. When we left I would park in the co-op's carpark for several reasons. The carpark that most of the dancers used was always crowded a tight to get in and out and also the co-op's park was normally empty and poorly lit. Just right for courting couples. We had just got in the car and I was putting the keys in the ignition when Dorris's hand was in my lap stroking my cock through my trousers. I couldn't help it, even thinking of Tiffany, I got hard with her mother stroking my cock. As you can guess I learnt a few more moves in the back seat that night. The following week I again took Dorris as Tiffany still wasn't up to it. Again we ended up in the back seats and after we finished and I pulled out to my alarm the condom had broken. I told Dorris and told her I was sorry. She brushed it of telling me it would be alright. The following week Tiffany and I were back on and I discovered that my mate had moved to all nights as it was far better money. Dorris stayed at home. The back seat was duly used before I took Tiffany home. The following week Tiffany had something else to do so I again took Dorris. She was like an animal that night, as if she had been starved of sex for years. I wasn't even given time to put a condom on. The next week I was back with Tiffany and we had our normal nooky after the lessons. Then as we got dressed she asked me if I loved her. I thought it a little strange, but told her of course I did. Then she dropped the hammer, "I'm pregnant." Her missing lessons were down to me. I had got her pregnant. We sat down with her mother the following evening and told her the news. She straight away suggested that I move in with Tiffany. They lived in a nice large four bedroom house in a very nice area, way beyond what I could afford. I could then sell my one bed flat. It seemed to make sense. It wasn't long before I found myself in the house alone with Dorris. No back seat needed as I fucked her silly in her own bed. That night I made an extra effort when fucking Tiffany in case she thought I wasn't giving her everything. About a week went by and I again found myself servicing Dorris in her room. By week four I had fucked her in her bed some six times and each time made sure that Tiffany was getting what she needed. Then I was taking Tiffany out for the evening as we had been living together for two months and also it was just a year since we had started dating. On our return from a lovely evening, and a shag in the back seats for old times sake, Dorris was sat at the table. She didn't look happy and when we asked her what was wrong she had us sit down. Then quite calmly she told us she was pregnant. I could feel my heart going twenty to the dozen. She showed us the test thingy that read Pregnant. Tiffany assumed it was my mates. I knew it couldn't be as Dorris had always used a condom with him, also they had stopped seeing each other well over two months back. Tiffany's face when Dorris told her that it was mine. The tears and tantrums had me sleep on a mates couch for the night. The next evening I was sat down with both of them. They had been talking and probably arguing. I was told as Catholics they were both having their babies. I would marry Tiffany and we would bring both babies up as if they were both Tiffany's. Eight months later I was the proud father of a boy and a girl. Tiffany and I married and we all lived in Dorris's house as a family. Tiffany not only forgave me but was ok with me sleeping some nights with Dorris. As the kids got older we had to be far more careful when I could be with Dorris, of course I would sleep with Tiffany as that was normal. Whilst they are Catholics I am not so I had the snip so no more slip ups. Our arrangement lasted until Dorris was ill and lost all interest in sex. Today we are still a loving caring family and our children have flown the nest, leaving the three of us together.