If you liked The Fault in Our Stars then you'll probably like this book. Personally, I didn't enjoy it but that might be because I'm no longer in the target audience. I did enjoy Madeline's lists and studies in the book. However, I didn't like that Olly seemed practically perfect in every way. I called the twist and didn't like the ending. 

I hated how Madeline treated her mom at the end, like yeah what her mom did was terrible but she was dealing with a lot of trauma and Madeline was all she had left. I didn't understand Madeline's complete lack of empathy.