2 Samuel 13:20-22

Her brother Absalom saw her and asked, “Is it true that Amnon has been with you? Well, my sister, keep quiet for now, since he’s your brother. Don’t you worry about it.” So Tamar lived as a desolate woman in her brother Absalom’s house. When King David heard what had happened, he was very angry. And though Absalom never spoke to Amnon about this, he hated Amnon deeply because of what he had done to his sister.