As the world around Michael Jackson's mysterious life begins to unravel it has been revealed that he was not, in fact, the biological father of his children.

An inside source has come forward to reveal that though the "Beat It" singer was married to the kids' mother Debbie Rowe, they used a sperm donor to conceive their kids Prince and Paris.

The donor has been named as Arnold Klein, Jackson's Los Angeles-based dermatologist who was also Rowe's former boss. The insider explained, "He is the dad. He and Debbie signed an agreement saying they would never reveal the truth."

Back in 2002, Rowe alluded to the fact that she and Jackson never consummated their marriage, and that she carried the children as a favor to him. "I said, 'Let me do this. You need to be a dad. You have been so good to me.'"