I loved this book so much - I've read a lot of good YA books this year but I think I might even prefer this to The Summer of Chasing Mermaids, which I thought was exceptional as well. 
 This book is about Madeline - an 18 year old girl who is allergic to the world. She lives, solely, within her house with only her mother and her nurse for company due to the death of her father and brother when she was a baby. She has never tasted air, she's never stood on grass - and until now, she was happy enough. Until one day, she sees a new family move in next door and suddenly, happy enough isn't really enough. 
 I can't really go into all the things I loved about this book without spoiling major things about it - I did guess some major plot points early on, but it didn't bother me at all, in fact ~knowing some things, just made me more interested in how it was going to be explained. And it didn't disappoint - everything about this book was just pretty wonderful. 
 The book has lots of illustrations within it, and they really add to the story. The characters are great - Madeline is a really likeable lead character, and she feels real. Her reactions feel realistic - she's a great character, who deserves someone as wonderful as Olly in her life. Their love story is wonderful and it makes everything within this story make sense. 
 I just really loved this and I hope, one day, we might see a sequel. I wasn't quite ready to say goodbye to these characters, and I imagine I will be re-reading it a lot so that I don't have to.