@OP: Cannot you have a secret relationship with him for a couple more years to be sure of what you want out of life? I mean 19 years old is still very young to get married and to be sure of what she wants in life, and if you make a decision to run away, then things might change between you. Who knows. Many people think they are in love but end in divorce within 5 years. Then you would lose your love and your parents. I'm not saying your parents are right, but maybe you need more time to think about this to be sure. But the threat of killing you is concerning. I'm not sure how serious they are. Exercise discretion in whatever you decide to do to be safe.