Amazing! 
 If you had an doubts about how brilliant Adam Silvera is, then this book will remove all doubts indefinitely. I don't even know how this book could be adventurous, funny, and sad all at the same time while begging the question, "how would you spend your last day on earth?" 
 Rufus and Mateo are lovable characters who I immediately connected with. They are complete opposites but find a unlikely friendship when faced with their death day. I like that they changed each other. Rufus was more adventurous and daring than Mateo and pulled him out of his shell and truly lived. Rufus is more guarded and Mateo helps him bring out his more generous side by helping those who have less than him. 
 So basically this book is truly fantastic. I really fell in love while knowing things would not end well for these two characters, but loving the ride all the same. Adam Silvera broke my heart with this book. He is a talented writer who comes up with very unique stories that really make you think. I can't recommend this book enough. It is so worth reading.