Kailin Gow said this quote

I grinned. “So you are human after all.” I touched his chest, feeling him breathe hard in and out. “I always thought you were made of steel, you know,” I said.“Superman?” Nat arched his eyebrows.“No, the Tin Man,” I answered back. I settled my head against his chest, turning my ear to listen to his heartbeat. “I sometimes wondered if you had a heart.” - Summer, Perfect Summer