This is not the most brilliant script in the world. On the other had, as rom-coms go, it was put together beautifully, and well worth watching.
My wife didn't think it was very good at the beginning - too sophomoric, I imagine. By the end, she was into it. Our problem, not being Korean, it took us near half the movie to figure out which boy was which.
Kim Yoo-jung is absolutely adorable, and the triumvirate of leads are all handsome.