One sentence introduction:
Seven years ago, she heard him say, "It's just for fun," and decided to leave with the misunderstanding.
Seven years later, when they met again in the hospital, she said softly: "Long time no see." He turned and left indifferently.
He didn't know that she had been hiding a secret for seven years.
She didn't know that he had hated her for seven years and loved her for seven years.
