How well do you really know someone you've known your whole life, inside and out? How do relationships grow in the spheres tangential to romantic- platonic love, work partners, creative partners, life equals? Absolutely adored this book from start to finish. Zevin's writing is electric and style so fluid. Could not put it down. The non-linear flow was so intriguing, giving the whole book a documentary-esque feel that I really enjoyed. The interspersed POV swaps were also creatively used and added another layer of genius.