I was going to give it 3 stars as there was not much more character development in the chemistry between Lily and Ryle. Even though they remembered each & every details of each other, they didn't felt like emotionally connected, in most of the book, there are not much moments which describes romance apart from physical relation. However, in case of Atlas and Lily, it felt emotional bond between them. Part 1 felt like a fairy tale, but Part 2 much more felt real, that's why I'm gonna give it 4 stars.