Angelina Jolie wrote introduction for Billy Bob Thornton's memoir

The exes reunited for Thornton's latest endeavor

Who better to write the forward for your book than your ex-wife? At least thats what Billy Bob Thornton was thinking when he asked Angelina Jolie to help compose his memoir The Billy Bob Tapes: A Cave Full of Ghosts.

Actress Angelina Jolie arriving at The 18th Annual Screen Actors Guild Awards at The Shrine Auditorium on January 29, 2012 in Los Angeles, California. Philip Vaughan or

According to Amazon, Thorntons book, set to hit shelves on May 15, tells colorful tales of his modest (to say the least) Southern upbringing, his bizarre phobias (komoda dragons?), his life, his loves (including his heartbreakingly brief marriage to fellow Oscar winner Angelina Jolie), and, of course, his movie career.

Jolie is one out of four celebrities that have joined forces with Thornton. His intriguing stories and thought-provoking rants are written as a dialogue between him and country music star Kinky Friedman.

Also, the memoirs cover reads, Introduction by Angelina Jolie, with commentary by Robert Duvall, Dwight Yoakam and Tom Epperson.

Jolie and Thornton said I do in 2000 and announced their divorce after three short years. Their brief marriage was filled with peculiar behavior, including wearing vials of each others blood and intense PDA. Despite the actors failed marriage, the two remain friends.

In 2010, Thornton commented on his ex saying, We talk every now and then. She seems to be doing very well directing her own movie, which I am so proud of her for. Shes real smart, and! very cr eative, and I think its a great job for her.

After seeing Jolies film, In The Land of Blood and Honey, he said, I thought she did an amazing job. She really dug deep and it meant a lot to her. Im very, very proud of her.

Due to their previous and bizarre relationship, it should be interesting to read Jolies excerpt.