Brad and Ang Secretly Married??

Superstar parents, Brad Pitt and Angelina Jolie are the world’s most glamorous couple — but one thing has been missing from their seemingly perfect lives: A marriage certificate. Now a friend tells that Brad, 45, has issued Angie, 33, an ultimatum: “Brad’s told her, ‘Marry me, or it’s over.’ ” What’s more, another source says, Brad told Angie — who hopes to add to their six children — “he definitely wants to get married before they have any more babies.”