This book is a good one, although I feel that the 3rd quarter of the book is rushed. It is built on a beautiful concept- a guardian angel for an autistic child, and the older sister falling in love with the angel. I connected well with Zoe- she is a genuine character and is easy to relate to. We get to see how she deals with difficulties in not so constructive ways, and then overcoming them. Matthias is an easy guy to love- he is humble, honest, hot, old fashioned, and pure. This is a breath of fresh air!Though, I got nothing out of Brit, Zoe's best friend. She is flaky, fake, and I don't know why they stay friends. Aside from that, all I can say is brace yourself for a conclusion that is unexpected, though it is beautiful and a good way to end.