The Stranger by Caroline B. Cooney

() Caroline B. Cooney used to be my favorite author when I was younger. Her books are full of suspense, drama, and thrills. This is a little different from her usual work, but not by much.
This is a classic teen love story except for one unexpected twist: the boy Nicoletta (the main character) loves isn't really a boy at all. In fact, he's not even human. He's part of a curse placed on a cave long ago - he's now part of the cave and can only appear in human form in the sunlight. Otherwise, he's a big, moving piece of nature (dirt, plants, rocks, etc...)
Nonetheless, Nicoletta is hopelessly in love with him. She's never been in love before. And it's not like she doesn't have her options; the most desired boy in school desires her.
But their romance is difficult, for Nicoletta can rarely see him and when she does, she usually messes something up. Plus, she's having a very fake romance with that guy that everyone but her wants at school.
When Nicoletta brings her companions to the cave unknowingly, danger is imminent and tragedy is now destiny.
It's entertaining, but that's all. Not much substance, but very enticing.