It seems that Kevin Federline is planning tell all about Britney Spears!He is preparing to talk about Britney’s alleged drug abuse, wild partying and her lesbian tendencies if he doesn't get what he wants from the divorce settlement.

A source tells the ever-trustworthy Star magazine:
Kevin is either hoping a publisher will pay him big money for the book, or that Britney will cough up more cash than what is in their prenuptial agreement to keep him from spilling the beans."As it stands now, K-Fed wants sole custody of Jayden-J and Sean-P as well as a settlement of a minimum of $20 million. He is also alleging that he can “prove that Britney is an unfit mother” by revealing her partying ways both while she was pregnant and when their babies were born.

The source added:
Kevin says he filmed it just a week before Britney filed for divorce. He told me, 'I want the world to see that Britney is an unfit parent and that she's not in her right mind."