"I did know Rue. She wasnt just my ally, she was my friend. I see her in the flowers that grow in the meadow by my house. I hear her in the Mockingjays song. I see her in my sister, Prim. She was too young, too gentle. Im sorry.
Biggest difference between Peeta and Gale. And probably why Katniss chose Peeta. He knew and understood how much Katniss lost of herself in the Games, when Gale didn't and couldn't know or understand, even though he was her best friend.