Everyone has that one ex who causes you to think, Ugh, why did I ever date him? And celebrities are no exception.
It's one thing to be embarrassed about a past relationship. But when you're in Hollywood, it's a yoyo of who's dated who. Can you say incestuous?
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But just like us, stars aren't immune to making mistakes in the dating department. And thanks to them, we get to gossip about every one-night stand, quick fling or engagement that shouldn't have happened.
Take a celeb couple who hooked up in 2001 despite a seven year age difference (she was older!). Or two A-listers who were once engaged, oh, 20 years ago. Can you guess who? VIEW THE GALLERY: 10 WEIRD CELEBRITY HOOKUPS YOU DIDN'T KNOW ABOUT
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