The Unlikely Romance of Kate Bjorkman by Louise Plummer (1995)

Kate Bjorkman, six feet tall, bespectacled and gawky, is celebrating the holidays in Saint Paul with her family. Her brother comes home for the holidays bringing his friend (and her longtime crush) Richard with him. Romance ensues, and she writes the whole thing up using her Romance Writer's Phrasebook. So adorable and charming.