Normal People by Sally Rooney

Really admired this book, a slow cooker about a boy and girl who become friends in high school and stay friends until the end of university, with the relationship deepening, fading, re-appearing, and evolving often along the way. Rooney's two main characters think and speak in an emotionally complex manner the whole way.  At first, I doubted the probability that teenagers could even come across that way, mentally or verbally, but she convinces me by the end of the book.