At first, eyewitnesses at Citrus Bar & Grill were stunned to see Kevin Federline and Jennifer Aniston talking to each other. But they were even more shocked when the pair started downing shots together - and floored as the drunken couple staggered out.

In other news, Britney Spears estrange husband Kevin Federline is threatening to write a steamy book about his marriage to the pop star reports Det

Federline is planning to publish a book on their marriage if he is left dissatisfied with the divorce settlement. He further adds that the book will include all the details about his estrange wife’s habits, wild drinking, alleged drug use as well as her sexual attraction towards other woman. He said he is planning to reveal everything by publishing a book on their marriage and show it to the world.

A source tells 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 pre-nup to keep him from spilling the beans.�