so he asked Amnon, “Why are you, the son of the king, so depressed morning after morning? Won’t you tell me?” Amnon replied, “I am in love with Tamar, my brother Absalom’s sister.”
Jewish Publication Society of America Version (JPS1917) - 2 Samuel 13:4 >And he said unto him: 'Why, O son of the king, art thou thus becoming leaner from day to day? wilt thou not tell me?' And Amnon said unto him: 'I love Tamar, my brother Absalom's sister.'