Britney Spears won't be clowning around with Justin Timberlake

Britney Spears is allegedly planning to lift the lid on exes Justin Timberlake and Kevin Federline in a tell-all book.The 'Toxic' singer is said to be "hurt and angry" about her failed relationships and is now set to exorcise her demons by naming the people"who did me wrong" in a sizzling autobiography. A source told America's Star magazine: "Britney blames most of her problems with drugs and alcohol on the heartache she experienced years before, during her time with Justin - she couldn't trust him."I hear she's going to say she believes he constantly lied to her about other girls and that destroyed her self-esteem."She also felt he became mean toward the end of their relationship, she said he called her fat and told her she'd need to lose weight before he would have sex with her."When Justin learns about this book, he's going to be p***ed." Britney, 25, dated Justin - who she met on Disney show 'The Mickey Mouse Club' - for almost four years until 2001. Sources also claim the book may reveal the singer and mother-of-two contemplated suicide when she realised husband Kevin Federline was using her for fame and money. A source said: "His womanising, his wild spending, the verbal abuse he hurled at her when he thought their marriage was coming to an end. Britney will say he deliberately tried to drive her crazy."She feels Kevin just pretended to love her for the money and a music career. When that sunk in, she was so heart broken that she wanted to kill herself."The book will also allegedly expose Britney's mother, 51-year-old Lynne, as the person she blames the most for everything that has gone wrong in her life.The source said: "Britney will call her a 'stage mom from hell' and blame her for almost every ill in her life."She'll say Lynne's money hungry and that she was just along for the free ride. Britney thinks of her as a meddling, smothering person and blames her for her messy marriages."