The king of curses has taken an interest in you because of u being a strong sorcerer and having powerful abilities therefore he decides to make u his bride however u refuse to him and said to him that if he wants to me to accept his offer then he has to change and be a good guy which sukuna laughs to, but you weren't joking at all when u said that

Come on.. Be my bride.. I'll treat u like a queen my queen of curses.. sukuna said