Family Fun

I married at 26 and by the time I was 30 had 3 children, my wife was 23 at the time of our marriage and attending university where we met. She finished her studies and I join my family business. At 34 and with 4 children, I took a position interstate in the business, we all moved there. While there my wife was also working for my family business, we were together almost all the time at work or home, we preferred it that way. My wife's younger sister is a quiet woman who is a loner in most things and works from home. When her sister got a job close by, my wife asked her to stay with us and she accepted. My wife thought it a good idea as her sister didn't date and so looks after our children for us. Last Christmas we celebrated a little too much and we ended up having a threesome including my sister-in-law. I enjoyed the sex with both sisters and would be delighted to keep it going. So did my wife and it was her who asked her sister to join us in our bed every night. At first, she wasn't sure, it turned out we were her first sexual partners. She had only masturbated or used a dildo before, neither my wife nor I had thought about her sexual status. Then it dawned on us both, that maybe she might get pregnant as no precautions had been taken. My wife got test kits and a positive result was confirmed. Now I have 6 children, 4 with my wife and twins with my sister-in-law. The family has accepted our relationship.