Wow. Wow. This book is amazing. Seriously, why is it not available in paperback? I would gladly pay twice just to have a physical copy of it. That's probably the highest praise I can think to give a book.
Like others have said, the title and cover of this book can be a little misleading. It is not your average romance novel. There is so much depth and emotion to it. When something good or bad, exciting or sad happened I literally felt it in my gut. I found the characters and their relationships genuine and believable. I even thought the book within a book was rather clever.
I don't necessarily consider myself a "romance" reader, although I have read my fair share of them lately. Reading this makes me reconsider my opinion on the whole genre. I can't explain it, but I just found it to be special and unique. Am I just naive and are there lots of books out there like this? Did this book come along at just the right time and scratch an itch I didn't know needed scratching? It's possible. But either way, it completely blew me away. I don't think I expected to love it as much as I do.
So in conclusion: Did I feel the character's emotions in my gut? Yup. Have I been rereading it for the past couple days because I'm not ready to move on? Yup. It gets 5 stars from me.