This book is a collection of letters in the form of poems/ lyrics exchanged between Harry and Zayn.( The collection may not be purely confined to their context and you can read the content anyway even if you don't want to read it for Zarry :).The content of this book reflects a pure and delicate bond which seems to have existed between "ZARRY". The poems highlight the conflicts of their mind and how much they longed to be with each other. However, this is entirely a work of fiction and a product of a creative mind!