Change for the better

I own and live in an apartment building and it's great looking and well-kept place. The body corporate keeps things very good. I'm the only single you could say under 40 in the whole building. There's a couple of other guys, but they are a couple and were only short-term renters. There's also a couple of girls 35 and 32 also a couple and then there's me 36 single and not in a relationship. The apartment the 2 gays rented was sold and they were soon gone, a couple in their fifties moved in and she soon got herself on the body corporate committee and shortly after was running it. I don't attend the meetings much, if they leave me alone, I don't bother them. The new head of the committee is a real go getter and was soon arranging parties and such things every month. I went to the first one and did enjoy myself, so I went to the next and so on. No available talent for me except the lesbians and I wasn't on their radar as they say. But then the party season came Halloween, Thanksgiving and Christmas, I could include New Years Eve. But the deed was done by then, The Halloween party was great like all the parties, the only thing was I awoke in a strange bedroom and wasn't alone in the bed. Not remembering much at all, I was about to see who I was in bed with. When the door opened, and older lesbian came in, completely nude. She spoke to the 2 of us in the bed and the younger lesbian answered. At first, I thought I had got lucky with younger one. But in fact, I had got lucky with both of them, and they were happy I had fucked them both. This relationship continued over the following weeks and every party we finished up in bed altogether. I was fucking them both once a week and always a threesome. I was quite happy fucking them and looked forward to the next time. Just after Christmas I got a shock the younger lesbian said she had missed her period and the older one said ditto. I hadn't thought of precautions, I was too busy enjoying myself to realize lesbian don't take precautions. Tests kits showed a strong positive result for both, and I wondered what was going to happened. They didn't seem upset or annoyed with me and still wanted sex with me. Finally, they told they were marrying, and both wanted me as their best man. Finally, I got it worked out and I'm the friend with benefit of fucking both of them. Neither had a brother to get the other pregnant and they had come to like me at the party and so I became their inseminator of choice, they didn't expect me to support them. But hoped I would be still around in their children's lives also. Also, I may be wanted to provide insemination in the future. The idea appealed to me, but I wanted a slight change. Thru some quick talking and a little cash payment, I change my apartment with apartment next to them. Allowing a doorway to be installed into their apartment, with that done we had more room for the growing family and were now living as a family unit. They regularly have me in their bed for sex or just all sleeping together, I stay in my bed when they want personal time as they call it. I'm their human dildo you could say.