Update: maybe I was a bit harsh with this book, and I feel like I liked this book after more than I did while I read it. I stand by my rating, but agree that my review was a little harsh. 
 For the first half of the book, I really just felt extremely indifferent towards all of the characters, and it wasn't until the last 1/3 of the book that I started to get into it. It was a solid 2.5 for me, and then the ending came - which was a disappointment because of how abrupt it was, but it also made me realize that I wanted more. :) 
 Even though I felt like this could have been better, I'm definetely looking forward to the movie and reading more of Nicola Yoon's books.