Mark Lester has reiterated his belief that he is the real father of Michael Jackson’s three children.The ‘Oliver!’ actor is the godfather to Prince Michael, 16, Paris, 15, and Blanket, 11.Jackson’s longtime friend has claimed that he donated his sperm to the late singer in the mid-1990s, but they never spoke about it again.Lester has said that he hopes to undergo DNA tests with the permission of the three children. "He was a great dad to them, brought them up and was brilliant with the kids so I just didn’t go there but there is obviously a good possibility [that I could be the biological father],” he explained."I wouldn’t have a DNA test without the children’s permission but when the children come of age, and it’s not far away, and they decide they want me to do it then I will. It is up to them.”Talking about their alleged agreement, Lester added: "I remember Michael ringing and saying, ‘Oh, you don’t have any fertility difficulties do you?’. He was half joking so I joked, ‘Oh, I just look at her and she gets pregnant’."So then in a light-hearted way he said, ‘Will you help me out?’. Initially I thought he wanted me to do something with his ex-wife Debbie Rowe and I was thinking, ‘I don’t think so’."Then out of the blue about a year later, he mentioned sperm donation and I agreed.”