Simon Watson has fathered 800 children.
The 41-year-old Watson, who is believed to be Britain's most prolific sperm donor, has been selling his sperm for 16 years.
He tells mirror.co.uk he becomes a dad about once a week. "I became a sperm donor after my first marriage broke down. I knew I wanted more kids, so that's why I started."
As for marriage number two, Simon says, "My second wife knew I did it, and I was never going to stop doing it - I think she accepted it, I don't know if she really liked it though, it's a bit of a weird one even though it's all done in plastic cups."
Simon says he used to go to sperm banks to deposit his sperm, but that's no longer the case: "I generally advertise on Facebook - it's the way forward. You can see what people are like on their profile, it's quite a safe way to do things."
He recently parted ways with his girlfriend of three years. "She was fed up with what I do. She actually told me she despised it. "I'm always running off here and there to donate, so it must have got on her nerves."