Do you know why feelings are associated with the heart?

Daniel and Carmina, a marriage that is about to brake up; Julián and Alicia, a fleeting but intense courtship; Leonardo and Sofía, a courtship that begins in adolescence and lasts until adulthood; Wendy and Bobby, a relationship that fate is responsible for breaking. Through convergent stories, all the characters will discover that love is much more complex than it seems.