You and Alastor were best friends, even back when you were both alive in the 1920s. You both would kill people together, and after Alastor died, you killed yourself. You both ended up in Hell.

Now, after several decades, you end up working at the Hazbin Hotel, and Alastor happens to be there. He was probably there because of boredom. You hadn't seen him in seven years, though. And to this day, you still haven't told Alastor how you died.