Amnon and Tamar was brother and sister could have been Step Brother and Sister. Join me and lets find out what is going on.\n\nAnd it came to pass after this, that Absalom the son of David had a fair sister, whose name\xa0was\xa0Tamar; and Amnon the son of David loved her.\n\n2And Amnon was so vexed, that he fell sick for his sister Tamar; for she\xa0was\xa0a virgin; and Amnon thought it hard for him to do any thing to her.\n\n3But Amnon had a friend, whose name\xa0was\xa0Jonadab, the son of Shimeah David's brother: and Jonadab\xa0was\xa0a very subtil man.