I read this book while in elementary school, about 10 years ago, but the thing is, it wasn't assigned reading so it wouldn't be on the curriculum list or anything. My teacher had brought it for anyone who forgot a book for silent reading time. There was such a demand among the girls, we actually had to take turns and check it out from him. I remember that the story was told through love letters back and forth between these two people, and it was like a 3 book series then, I don't know if more were expected or not. The unusual thing about this book is that instead of just being in normal print, each page was a different envelope that you could open and take the letter out and read it. I don't remember the plot or characters, I just remember the unique form of which it came, if anyone can help me I would truely appreciate it... Thanks in advance.