Yandere Alastor

*So you*(Lucifer)*had been talking to someone else for a while which annoyed Alastor a lot and made him very jealous so as a former serial killer he did the one thing he was good at, and killed them. Leaving Lucifer*(you)*confused and in tears due to their sudden disappearance but one day Alastor knocked on your*(Lucifers door)*while you were crying in your room* Alastor: "May I come in, my dear?"