Angelina Jolie has filed for divorce from Brad Pittafter learning he was cheating on her with his sexy co-star, a well-placed source told The Post on Tuesday.
“She hired a private eye because she felt that he was fooling around with her on the set, and it turns out, he was. And that was the final straw,” the source said.
Pitt, 52, had been rumored to have been cozying up to his “Allied’’ co-star Marion Cotillard, 40, for months during the pair’s filming of the World War II drama in London.
The PI discovered that was Pitt cheating on his wife of two years with Cotillard — while also partying like a single guy on a mission, the source said.
“The atmosphere [off-set] was full of hard drugs and Russian hookers, and Angie was told Brad got caught up in it,” the source said.
“He’s in the throes of some insane midlife crisis, and Angie is fed up.”
Jolie, 41, was sick and tired of sparring over their lifestyle, another source said.
She has increasingly wanted to quit Hollywood in favor of devoting herself full-time to traveling the globe for her humanitarian work, while Pitt prefers Tinseltown and its parties, the source said.
Jolie spoke before the United Nations in Manhattan just this past Friday to ask them to help millions of Syrian refugees.
“The older she gets, the more serious she becomes, and she is sick of the Hollywood thing,” the second source said.
“He wants to make movies. She doesn’t. It’s a fundamental difference. It’s how you live your life.”
Making matters worse, Pitt is closer to Jolie’s famous actor dad, Jon Voight, than she is, the source said.
“Jon’s a Hollywood guy, and she’s been estranged. Brad hangs out with her father more than she does,” the source said.
Brangelina’s French chateau, Miraval, has been quietly on the market for a few months, and locals were told they were selling it because they are breaking up, a source told The Post.
Jolie has hired top gun Laura Wasser as her lawyer.
The couple were married in August 2014 but have been together since 2004.
Angelina Jolie has filed for divorce from Brad Pitt and the trigger was a conflict over the kids, substance abuse and anger ... TMZ has learned.
Jolie filed legal docs Monday citing irreconcilable differences.
She's asking for physical custody of the couple's 6 children. She is asking the judge to give Pitt visitation. It's significant ... she does not want Brad to have joint physical custody ... only joint legal custody.
Sources connected with the couple tell us ... Angelina's decision to file has to do with the way Brad was parenting the children ... she was extremely upset with his methods.
Our sources say, Angelina became "fed up" with Brad's consumption of weed and possibly alcohol, and mixed with what she believes is "an anger problem" ... felt it became dangerous for the children.
We're told there was no alleged "third person" ... her decision to file was solely over Brad's interaction with their children.
Jolie, who's being repped by disso queen Laura Wasser, is not asking for spousal support.
Jolie lists the date of separation as Sept. 15, 2016.
They married in August 2014. They've been together since 2004.
The last time we saw them together was in July when they took the twins, Knox and Vivienne, out for a birthday breakfast in West Hollywood.