Kevin Federline's memoir claims Britney Spears mistreated their son and was erratic during pregnancy, sparking her rebuttal calling it false.

Kevin Federline has released his memoir, "You Thought You Knew," explaining that his two sons, now adults, inspired him to share his side of the story after years of silence to protect them. The book details his tumultuous marriage to Britney Spears, including claims of her erratic behavior during pregnancy and breastfeeding, substance use, and emotional and physical mistreatment of their son. Federline, now 47 and living in Hawaii, also reflects on his music career, fatherhood, and the impact of the conservatorship era. Spears has responded by calling the book filled with "white lies" and harmful, while expressing her ongoing desire to reconnect with her sons. The memoir is available as an audiobook on Listenin.