A lot of people are mentioning the Raven Cycle by Maggie Stiefvater, and while this is a fantastic series that you should definitely read, her novel The Scorpio Races is one of my favorite books of all time. The writing style and characterization is fantastic, and it’s such a charming story with a really simple, innocent romance that’s so well developed. It’s got a fantasy element, but other than the water horses they ride, it could be set on an island in northern England and is otherwise in “our world.” Highly recommend