It’s a bit strange. Since ancient times, it has been said that if a woman marries a bad guy in the family, it means that a woman’s bad luck will harm her husband, torture her son, harm her parents-in-law, and ruin her wealth. Saying that your boyfriend would harm your brother is a bit new. Didn't your mother calculate it for you? How could it be calculated for your brother? Your family is looking for a son-in-law. If it's not a son-in-law who came to your door, then someone told a lie. One is your mother who deceived you, and the other is the fortune teller who deceived your mother.