There have been few splits that shocked the world as much as the divorce of Brad Pitt and Angelina Jolie.

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The Oscar-winning actress, 41, blindsided the world when she filed for divorce from her husband, 53, back in September after two years of marriage and more than 10 years as a couple. Since then, the two have remained nearly silent when it comes to their marriage, breakup, and six children — Maddox, 15, Pax, 13, Zahara, 12, Shiloh, 10, and twins Vivienne and Knox, 8.

So what really went wrong before these two headed for Splitsville? Keep reading to find out!

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Her Jealousy Became an Issue

When In Touch broke news of their divorce, sources revealed that the two had a final, explosive fight when he left to film Allied with Marion Cotillard.

“When they argued over Marion the last time, Brad lashed back at Angelina, telling her he was done with her insecurities and fits of jealousy,” a friend told In Touch at the time. “He said she was suffocating him.”

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Brad Was Investigated by CFS After the Airplane Incident

Almost immediately after Angelina filed — which shocked Brad — fans began to speculate about the custody of their large brood. Things became even more complicated when the Los Angeles Police Department and the L.A. County Department of Children and Family Services began investigating an incident aboard a private plane, during which a drunken Brad allegedly became physically violent — allegedly lunging at Maddox, their oldest — during an argument.

Brad has since been fighting Angelina for joint custody of their kids, and continues to have supervised visits with his children.

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His Drinking Got Out of Control

Even before the incident on the plane — which was allegedly witnessed by in-flight crew members — Angie had grown frustrated with Brad’s drinking habits. At the time, sources told TMZ that his smoking weed, drinking alcohol, and anger issues “[posed] a risk to their kids.”