The female protagonist was naïve and believed that she would one day meet her prince just like in the story book she always has with her. One day she goes to karaoke with her friends and meets up with some guys. She finds her exact type and they meet up again later only to find out that he's only going out with her to win a bet (a challenge letter fell out of his pocket).

She throws the book at him and walks off saying something like the prince in her storybook is her only boyfriend while laughing creepily and that the guy should make out with the princess in the story book instead. He plays along at first talking to the book, also laughing creepily, before snapping and throwing the book at the ground.

Yes! thank you