Britney Spears' ex-husband Kevin Federline has released his new tell-all memoir, which includes a number of allegations against the singer which led her to speak out View 6 Images Britney Spears' ex-husband Kevin Federline recently released his memoir You Thought You Knew (Image: Getty Images)

Britney Spears ' ex-husband Kevin Federline has made some serious allegations against the singer in his new memoir. ‌

Kevin Federline and Britney Spears met in 2004 and married in September of that same year. The pop princess gave birth to their son Sean Preston a year later, and their second child Jayden James a year after that. ‌

Britney filed for divorce in 2006, citing irreconcilable differences as the reason for their split. It's been almost two decades since then and Kevin's

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