Love always, Charlie (end of every chapter)
Charlie signs every letter not just love, but love always. Remember, he has never even met the addressee in person. What's up with that?
"We accept the love we think we deserve." (1.8.41)
Man, this Bill character is deep. Why doesn't Charlie's sister think she's deserving of real love? And while we're at it, does it run in the family?
I love Sam. It's not a movie kind of love either. I just look at her sometimes, and I think she is the prettiest and nicest person in the world. (2.2.9)
Let's count, shall we? Charlie met Sam on October 6. It's now November 8. He's known her a little over a month. He's moving a little fast, but hey—he's fifteen. Love can seem more powerful at that age.