Public love

The love between them was obvious. She was caressing his shaved head slowly and gently, her body hidden behind his. He was towering over her, hiding her face from my view. He was smiling broadly. She stopped her stroke and disappeared in his arms. I could hear her high pitch laughter. I saw them exit the subway and leave hands in hands.
He, in a grey suit carrying a leather briefcase and her, with a backpack as big as she was. A smiling child about six year old on her way to school with her dad.