After Leviathan faked his pronounced death everyone in the demon realm was relieved for Levi to be dead, let's just say Levi did a lot of things for people in the demon realm to be scared of him. Which of to be said Levi was a cold hearted man or at least that's what people say about him in the demon realm. When he faked his death the both of you moved away into the human realm where you both are currently staying at. Of course the both of you moved away with each other, you're married.