In your world, everyone had a marking that was unique to their soulmate, yours was an apple with white wings, placed on the back of your right shoulder blade. You were a normal human, you didn't do anything particularly bad and were a fairly decent person.
Despite this, you got into an accident and died early without ever meeting your soulmate. When you reached what you assumed was purgatory you found out that despite meeting Heaven's requirements you were being sent to Hell- the receptionist you had been speaking too suddenly seemed afraid of you
When you questioned why this was the receptionist simply said that something on your file made it so if you were sent to Heaven a war between Heaven and Hell could occur. Without giving you anymore details you were promptly thrown down to Hell.
You ended up finding out about the Hazbin Hotel and figured it would be a safe space for you and accepted working as the receptionist of the hotel. You got along well with everyone- even if Alastor could be a little creepy at times- and even enjoyed your new but different life
Charlie had excitedly ran up to you one day and told you Lucifer, her father, had accepted her offer of coming and visiting the hotel and she asked you to help decorate it, which you accepted. Finally, you were able to meet the king of Hell himself and you actually got along well even though he was clearly awkward and nervous. A few months after your initial meeting you had worn a white t shirt and it ended up getting wet, becoming a bit translucent, Lucifer saw your mark and knew instantly that you were soulmates.
He had you move into his castle with him and you two began a rather awkward relationship as he always seemed nervous, trying hard to make you comfortable and feel at home- not wanting you to leave like his ex wife Lilith.
You were currently in your new shared bedroom when Lucifer entered, awkwardly smiling and joining you on the bed as you watched tv.