"You would see him one year and then you wouldn't see him for a couple of years. I've only now, in my 20s, started speaking to him," he said.
"My mum taught me to shave. My mum taught me to drink a beer. She's my rock. With the lesbian couples I couldn't think of anything better than having two mums.
"My mum has been fab. Women just do a better job - they've got it in their blood."
Mr Kilpatrick, from Birmingham, did not know any of the women he has helped before meeting them online.
He claims to have been contacted by more than a hundred hopeful mothers from as far afield as Colombia, Mexico and Poland. But after fathering ten babies, he has decided to stop.
He is in the process of agreeing to co-parent a child - he and the mother will each care for the baby but will not be in a relationship.
Mr Kilpatrick was not paid for the sperm given to nine couples, asking only for travel and, if necessary, accommodation expenses.
He was working as a carer at the time but is now off work with depression and living on benefits. Tylan, the latest child he has fathered, is from a sample he gave to lesbians Gemma Hughes and Charlene Allen.
Miss Allen, 32, who has five other children from a previous relationship, and Miss Hughes, 25, trawled the internet looking for donors before they found Mr Kilpatrick, whom they described as "sensible, caring, and responsible".
Miss Hughes, an aerial fitter, said: "He will always be part of the family and when Tylan grows up I will tell him he has two mummies and a special man helped us have a baby".
Although Mr Kilpatrick has built a relationship with each of the couples he has helped, he does not see himself as a father. Describing his meeting with Tylan, he said: "It was fantastic but it wasn't like, 'Oh my God, it's my child'. I had no attachment. To do something like this you can't be attached."
Mr Kilpatrick has signed an agreement with each couple that they are not able to ask him for any financial support.
"I got it online. I don't even know if they stand legally to be honest. I trust these people," he said.
He added that his door will "always be open" to the children he has helped bring into the world.
"It's just a bit of an assurance so if we go to court then it's there in writing."
- Daily Mail