After a long time, she asked him: "What would you do if I were not with you, but with him?"
He smiled and said, "It depends on whether you are willing. If not, I will destroy the world and kill him to save you. If so, haha... I will kill him and imprison you to make you miss him like crazy like me. I will make you die alone like me and hate me for the rest of your life."
After a long time, she asked again: "You said if you had to choose again, would you be the one who killed my whole family?"
He smiled and said, "If I knew and really wanted to do this, you would hate me forever, and you would only want me in your heart."