I didn't really enjoy this book at all.
In the beginning it was quite interesting and funny reading through notes from Rosie in her childhood and becoming a teen.
But that's where to good stuff ends, the rest of the book I felt was just a mash of Rosie complaining, making stupid choices and staying completely infatuated with someone she couldn't have for the entire book.
That and with the format of the book - its written as notes/ letters and emails between characters and the slow pace it drags a bit and I found myself not really caring what happens to Rosie as long as it happens soon.
Still it was interesting to read something in a different format, and perhaps someone older that has been through similar situations (kids, marriage etc) may relate better and find it enjoyable.