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Kristen Stewart, Gwyneth Paltrow and more of Hollywood's worst wives and girlfriends

By Jessica Wedemeyer Slide 1 of 14

Some of the greatest love stories of all time have played out in Hollywood, but behind the scenes, our favorite stars rarely achieve fairy-tale endings -- and it's not always the man who's to blame! Just ask Kristen Stewart: Her real-life love with "Twilight" co-star Robert Pattinson ended in tragedy when the actress got caught cheating. In honor of her 24th birthday on April 9, read on to get the scoop on K.Stew plus more of the worst wives and girlfriends in Hollywood.RELATED:Pop culture's most legendary romancesKristen StewartThe "Twilight" actress spoiled her fairy-tale romance of three-plus years with comely co-star and real-life love Robert Pattinson in July 2012 when she was snapped canoodling with her married "Snow White and the Huntsman" director Rupert Sanders. Though Kristen and Rob briefly reconciled after the embarrassing scandal, the British hunk ultimately couldn't find it within himself to forgive Kristen for her betrayal. We all make mistakes, but cheating on one of the hottest young stars in Hollywood, that's just crazy!
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