As I said in my update, sometimes there are no words good enough to express how and in what ways a book touches you. This book, in a nutshell, is a great read and good piece of chick-lit. It is a tearjerker, so be warned.
I know we all get invested in characters and find it hard to let go of them, but these characters have stayed in my mind since I started reading it, even after finishing it. I think they will be staying with me awhile.
There are bits that I find hard to believe (lots of tragedy for one character) but still a great book, one that is definitely hard to put down without outright finishing.