I thought this book was a fun and easy read. It only took me about 45 minutes to read through.
It doesn't have much of a plot or much, if at all, character development. The reason I gave it three stars is because I don't see how two people that live together can use notes as the only way of communication. I felt like both of the characters were neglecting each other and wanted very little to do with each others lives.
But the ending is very sad, and actually did make me tear up quite a bit. It was the best part of the book, and I would read another one of Kuipers books, keeping in mind that it may still be a short, fun read.