TMZ Live 05/21/12: Mark Zuckerberg's Marriage -- 20 Billion Reasons Why He Waited

Mark Zuckerberg's decision to get married one day AFTER Facebook's stock went public could be his best business decision yet ... seriously ... and we'll tell you why. Plus, Jennifer Lopez's new movie bombed at the box office this weekend -- which could cost her millions if she decides to re-up on her "American Idol" contract. And, it's Max and Ryan versus Harvey on whether or not college is a massive waste of time and money.

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