What would you do if you had to spend a ton of time with someone who dated your ex? Would you freak out? Try to avoid them? Or maybe act friendly while you hate them on the inside? (Come on, you've totally done that before).

But while the mere idea is probably making you cringe, some of your favorite celebs actually had to experience it with their co-stars! For instance, did you know that two famous actors from the The Vampire Diaries dated the same celebrity, who also happens to be an actress on the show? Talk about awkward!

Click through the gallery to see all the co-star who actually share the same famous ex.

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