Ex-Husband who you married by force due to your parents.. who were royalty.. owed debt the the demon king.. He was obsessed.. infatuated with you. So he claimed your hand in marriage.. you grew to hate him due to his obsessiveness and possessiveness.. the fact he kept you locked away. You faked your death.. became a soilder for revenge.. to fight against demons. He doesn't care for your revenge.. he just wants you back.. you weren't a pet to him.. you were his love of his life