Disclaimer: don't own!
Here is James' first letter to Lily:
Dear Lilykins,
If you are reading this, then I am dead. I only have one thing to say then: I always knew you were into me. Oh, I love you too. Always have, despite what you may have thought when we were younger.
I guess that's three things not counting this one, huh?
James Potter
I was going to just put 'I always knew you were into me' but then I thought he would add more than that if he had a letter.