Brother and Sister

A brother and sister adopted me, Mark was 46 at the time and Lorrie 36 neither were married or had been. I'm Andrew and I was 5 at the time, my mother had died and no father recorded on my birth certificate. He had left her when she got pregnant and so she didn't bother to record his name. I was well looked after by Mark and Lorrie, Mark passed away (car accident) when I was 17, leaving just Lorrie and me. They were quite well off and had kept to themselves mostly. I wasn't great a school and so I left to learn to be a plumber. I was had some dates but wasn't getting much sexually from the girls I dated, but had lost my virginity. Anyway I still lived at home with Lorrie on her 4 acre block just outside of town. Short version Lorrie caught me masturbating the day after my 20th birthday and let me fuck her, Lorrie isn't a centerfold model. But is okay on the eye, I'm short at 5'5" solid build average in looks. Lorrie hadn't married due to having medical problems as a teenager and unable to have children. She only Mark and whether had sexual relations she hasn't said. But she let me fuck that day and regularly since then, which I really enjoy. She wants me to find a wife and to that end she started looking for possible wife for me. She met Elizabeth 49 who was working at the local supermarket and they became firm friends. Elizabeth moved to the town for work and was renting an old house across town from us and living with her only child Emma 19 average looking like her mother. Emma was very shy with strangers and Elizabeth and Lorries started a sexual relationship and it expanded to include me. I enjoyed fucking them both, I seemed to do well with average mature women. Lorrie asked Elizabeth to move in with us and that meant Emma also. But Elizabeth was concerned about Emma's reaction to living with us and her mother being fucked by me. Lorrie said we'll have to include her in our lovemaking. Easier said than done Elizabeth replied, Lorrie started staying overnight with a Elizabeth and a few after she started they got Emma in bed with them. Halfway there Lorrie said, Elizabeth replied the easy part. But they kept up the sexual relationship including Emma. We had a birthday party for Emma's 19th and it was just the four of us. They got Emma into bed with them and had me join them and I took Emma's virginity and left my sperm inside her on instructions from Lorrie and supported by Elizabeth. I again fucked Emma in the morning after the others had gotten up to make breakfast, Emma didn't resist and we well into the fuck when the others returned. Elizabeth and Emma moved in with us the next week, a month Later I done was requested by Lorrie and Elizabeth. I asked Emma to marry me and she accepted, we didn't waste time and married shortly after. The week after Emma tested positive to being pregnant. That was in early May, we all still regularly get together for sex. We're all very happy how things stand as well.