My mother really likes SEX

My mother is always horny loves to fuck, but she doesn't go out seeking lovers she keeps it inhouse as they say. Unable to have more children since she had me, she overcompensated by becoming hyper horny and providing my father with sex anytime he wanted and all they were alone. Unfortunately, my father died in a workplace accident, I was 19 and at college. At first my mother kept to herself and didn't go anywhere. On my return home during a break from college her desire for sex increased quite a bit. Not wanting to find another lover outside the family she decided to use me, as I looked quite a lot like my father at my age. She came to my room late one night and we'd sex for the first time. I dated girls at college, didn't do so well sexually with them. So, I was always horny you could say and a willing woman wanting sex with me was too good to pass up, even if she was my mother. My mother relocated closer to my college, and I lived with her in the new family home. Still dated with no improvement sexually but could always get a fuck at home from my mother. On finishing college and getting a job interstate, my mother again relocated and I continued to live with her. Finally meet my now wife and getting her pregnant fairly quickly, my wife's family had split apart when she was 11 and her mother had died three years earlier than our first date. She hadn't heard or seen her father seen before the family split. My mother took to my girlfriend quickly and even seduced her after having her move in with us. Not long afterwards she got pregnant to me and we married, with us regularly having threesomes. My wife thinks it is great having my mother join in our sex lives. My wife is also very career centered, with us living with my mother and her looking after first child my wife can continued her career with minor disruption. She also wants three children and is currently pregnant with our second. We've great family lifestyle my wife says and it also perfect in my view as well.