In this quote, Alejandro Zambra explores the complex and cyclical nature of love. He suggests that we love in order to eventually stop loving, either to move on to love others or to be alone. This idea challenges the conventional notion of love as a permanent and unchanging force in our lives. Zambra presents the act of loving and letting go as a necessary process for growth and self-discovery. Ultimately, he views this cycle as the only certainty in matters of the heart.