Yep, the only reason I read this was because of the movie trailers.
I'm not sure this is gonna be one of those books I liked better then the movie. Hopefully, Rosie in the movie won't make so many stupid decisions like Rosie in the book. (probably not, because it looks like they're only doing the first decade of the book.)
How is the story told?
Through emails, letters, texts and instant messages. That's it. So while it makes for a fast read, you begin to wish you could read all the things that are being talked about. Like the look on their faces, or body language.
I did get emotional, but it wasn't because of Alex or Rosie. It has to do with Rosie's(show spoiler)
Time span: from the age of 7(?) to their 60's. Yep That's a long time period.