Kevin Federline is reportedly giving Jamie Lynn Spears’ fiancé Casey Aldridge advice. Aldridge is set to marry 17-year-old Spears, who is 5 months pregnant with their child.

Kevin Federline gives Casey Aldridge advice?

“Kevin told Casey that he should be involved in every deal that Lynn makes,” says the insider. “Casey knows that Lynne wants her 20 percent cut as Jamie Lynn’s manager, but she doesn’t want to give him anything.”

“Casey thought the money from pictures and interviews would go for Jamie Lynn, the baby and him, but he hasn’t seen a dime. He wants to know where all the money – and all the future money – will go. And he thinks the only way to do that is to marry Jamie Lynn,” the source added.