Rosaline is a delight from start to finish, a brisk, bright-eyed, and inventive romantic comedy with constituent parts that probably shouldn’t work this well together but do.

Dever is as excellent as ever as the acerbic, quick-witted, jilted ex. She coaxes the hilariousness and heartbreak out of each scene with ease and authenticity.

Rosaline . . . understands what makes a good adaptation: a sense of humor at least on par with if not exceeding the original, lighthearted lines with serious delivery, crackling romantic chemistry. And in the case of Rosaline, an unmissable lead in Kaitlyn Dever as a lovelorn medieval schemer left on read.

Played by Kaitlyn Dever, this Rosaline is very mad indeed (why shouldn’t she be?), but the always-winning actress helps guide a prickly footnote into delightful territory. One part coming-of-age tale, one part literary reconsideration, and all totally fun, Rosaline proves there’s still plenty to mine from the classic canon, with lively twists.

Rosaline ultimately sparkles in this cheeky telling of the greatest love story never told.