Kevin Federline is out here doing more memoir-related promo interviews that’ll make even the least dedicated Britney Army member’s jaw hit the floor. The former backup dancer turned professional ex just claimed in a recent chat that his new tell-all memoir You Thought You Knew — ya know, the same one packed with stories about [...] Read More... The post Kevin Federline Says Book Trashing Britney Spears Will HELP His Sons' Relationship With Her! Can You Believe This Guy?! appeared first on Perez Hilton.