Romeo and Juliet by William Shakespeare
Quote: "From forth the fatal loins of these two foes,
A pair of star-cross'd lovers take their life..."
What you thought: Star-cross'd! Sounds romantic. Like, celebrities dating, right? Stars in their eyes, because they're soooo in love? Stars crossing the sky over their heads while they kiss? Here it's used to describe Zac Efron and Zendaya, and here to describe a movie where "the star-crossed lovers wind up together."
But actually: This means they're as doomed as a chicken at KFC. Spoiler alert: things do not go well for Romeo and Juliet in the play, and this whole passage opening the play alerts us beforehand. "Star" here means fate, and "crossed" means cursed, as in, I was cursed by a witch to smell like potatoes forever. So Romeo and Juliet are cursed by fate, and unless Zac Efron and Zendaya are in for a brutal demise, the magazines have been using this phrase wrong.