They agreed to keep things private after a nasty few months of details leaking about their divorce, but the details Brad Pitt and Angelina Jolie may have wanted to keep private could still be released to the public through an explosive new documentary that is set to be released.

According to The Sun, author Ian Halperin, who previously discussed the couple's love story in a 2009 book Brangelina: The Untold Story, where he also accurately predicted they would split seven years later, sold the rights to Broken: The Incredible Story of Brangelina, a documentary detailing the couple's marriage falling apart, to Content Media Corporation, with plans for it to air on TV.

"This is the definitive film about Brangelina and a lot of secrets are going to come out," a source told the publication. "Ian has covered every cough and spit of their relationship and will reveal the real reasons behind Angelina filing for divorce."

Among the things the documentary will reportedly expose is news that the pair actually had split one year prior to their publicly announcing the break-up, and that there has been evidence collected which supports it.

"The biggest shock will be his claim that the couple were apart for mora than a year prior to their break-up," the source said. "He and his team have also managed to acquire some never-before-seen footage and interviews with both Brad and Angelina."

The source also claimed that since the pair have ben trying to keep things private now, it will likely not be something they'll approve of since the film is set to expose secrets.

"Lately the pair have been trying to put on a united front and keep their divorce discussions quiet. This is the last thing they need," the source said.

Jolie publicly filed for divorce from Pitt back in September of last year, and things quickly turned ugly with allegations that Pitt had been abusive towards their six children surfaced. He was later cleared of the allegations, but the custody battle remained nasty. However, earlier this month, the two agreed to settle the divorce using a private judge, which would mean all the records from their divorce and custody battle would remain sealed.

Tags: Brad Pitt Angelina Jolie