Angelina Jolie Pens Intro for Ex-husband Billy Bob Thornton's Memoir

Angelina Jolie has written the foreword for ex-husband Billy Bob Thornton’s memoir The Billy Bob Tapes: A Cave Full of Ghosts, which is scheduled to be published by William Morrow, an imprint of HarperCollins, on May 15, 2012.

our editor recommends

Berlin 2012: Disney's 'Maleficent' Will Be Angelina Jolie's Next Starring Role

Angelina Jolie's 'In the Land of Blood and Honey,' Billy Bob Thornton's 'Jayne Mansfield's Car' Head to Berlin Film Festival

5 Questions For Billy Bob Thornton

PHOTOS: Angelina Jolie's Top 10 Red Carpet Looks

Thornton co-wrote the book with musician/author/politician Kinky Friedman and it promises "colorful tales of his modest Southern upbringing, his bizarre phobias, his life, his loves (including his heartbreakingly brief marriage to fellow Oscar winner Angelina Jolie), and, of course, his movie career."

Thornton and Jolie were tabloid staples during their brief marriage from 2000-2003. They famously each wore a vial containing the other's blood on a necklace.

After their divorce, Jolie became involved with Brad Pitt in 2005. Although they never married, the two have six children together. Thornton has been involved with make-up artist Connie Angland since 2003 and with whom he had a daughter.

The two have remained on good terms since their divorce. In Berlin to promote his new film, Jayne Mansfield's Car, Thornton had only kind words about his ex-wife, who was also in Berlin promoting her new film The Land of Blood and Honey. "I saw it a month ago, and I thought she did an amazing job . . . to take that subject matter, something that's so hard to do, and she pulled it off on her first film. She really dug deep and it meant a lot to her. . . . I'm very very proud of her."

PHOTOS: 7 Hot Films to Watch at Berlin Film Festival 2012

Thornton also denied reports that his next film And Then We Drove was based on his relationship with Jolie. He told New York Magazine's Vulture,  "I would never make a movie about my best friend, either, or any other ex of mine, or something. That’s not my bag. I don’t mind exposing myself, but I'm certainly not gonna make a movie about someone else."