Messud, Claire. The Woman Upstairs
Nora Eldridge is a single 42-year-old elementary school teacher with few friends, no love interest, and an unfulfilled desire to be an artist. That is...until a new family comes into town. A beautiful young boy enters her class, and she feels an immediate connection to him. Soon she develops a friendship with his parents--a successful artist and a visiting professor at Harvard. Nora’s relationship with this family soon becomes an obsession, and she begins to live through them and for them, all the while keeping her extreme emotions of lust and anger hidden. This novel is a great psychological thriller and one of my favorite books of the year.