While they’ve growing their family for years, sources say Brad Pitt has had enough. According to OK! Magazine, he’s issued Angelina Jolie an ultimatum.

“Brad’s told her, ‘Marry me, or it’s over,’” a source tells the magazine. “He definitely wants to get married before they have any more babies,” another source adds.

What’s the beef? Sources say Pitt’s been feeling “stressed out” taking care of the family while Jolie pursues her film and humanitarian work.