For the longest time, Jennifer Aniston had no plans to share her life story. "Nope.I'm still living it," she said in 2021 when asked if she'd ever work on a memoir, like her character on The Morning Show. Just a year later, she was more open to the concept. "I'm going to do that one day," she said of writing about her private journey. "I'm going to stop saying, 'I can't write."

That day is now. After years of staying silent on wide-ranging rumors about why her marriage to Brad Pitt really failed, how much plastic surgery she's had, and the real reason she hasn't started a family yet, "Jen is finally ready to tell all," says a source, adding that the actress was inspired by fans and her late Friends co-star Matthew Perry's own memoir. "She realized life is short, so why not do it now?" And Jen, who has practiced daily gratitude journaling for years, "is going to do it right nothing is off-limits," reveals the source, who has had a first look at an early manuscript. "It's secrets she's never told."

THE BRANGELINA CHAPTER

Of course, the biggest one concerns Brad and, by extension, Angelina Jolie. "Jen knows people want to hear all about her love affair with Brad and the truth about their divorce, especially since Brad and Angelina have now split and Jen and Brad have reconnected," the source says of the pair, who wed in 2000 and announced their separation in 2005 shortly before Brad's romance with his Mr. & Mrs. Smith co-star, 48, was made public. At the time, Jen, 55, admitted the quick rebound "shocked" her as much as the rest of the world. "I'd be a robot if I said I didn't feel moments of anger, of hurt, of embarrassment," she confessed, famously suggesting that when it comes to Brad, 60, there was "a sensitivity chip that's missing."