This would have been written during the time that Peeta was hijacked and Katniss thought he wouldn't ever be the same
Dear Peeta:
Why did I take you for granted? Why didn't I realize what I had in you until you were gone? It took me losing you to find out how much I needed you.
Are you still in there? Because if you are, remember one thing:
You're a painter. You're a baker. You like to sleep with the windows open. You never take sugar in your tea. And you always double-knot your shoelaces.
Maybe that will get you started.
I love you.
Katniss
A/N: Yes, I know she says that to him when they're in the camp, but I'm pretending she has been thinking it for a while