In a deal, she became his fake girlfriend. When the playboy was gradually attracted to that strong and stubborn girl, he also slowly learned to be serious. But for him, the more he loves someone, the more difficult it is to say the words "I love you." For her, he will always be an insurmountable threshold in her heart. When they let go of their bonds and decided to be together, they suffered repeated blows from reality and were forced to separate. Many years later, when we meet again, things have changed. It turns out that time can change not only age but also people's hearts. But lies will eventually be revealed, and love will eventually be awakened... It turns out that after I met you, I will only love one person in my life.