When the narrator returns home from the cafe, he finds that his sister is out walking with her friend. The narrator tries to explain to her why she is in such a sad mood, but she cannot bring herself to admit that she is jealous of her sister's happiness. She tells him that he is jealous because he is in love with his sister. He tells her that she should tell her friend that she and her friend are in love and that they are keeping this a secret because they like each other so much. He says that he has never seen his sister so happy to see anyone.