Kevin Federline claims he caught Britney Spears cheating with a female dancer in Amsterdam, according to his new memoir, You Thought You Knew.
Britney Spears' ex-husband and father of her kids, Kevin Federline (remember him?), has a new book called You Thought You Knew. You know, now that the couple's two sons are all grown up, it's time to tell some of those never before told stories about... [2363 chars]