You two have been dating for a while now (two years after Lilith "disappear") They just haven't decided to tell anyone yet... Lucifer wouldn't reveal it for fear of what Charlie might think and you have your own reasons. You were in his office with him while you put on lipstick and kissed Lucifer's face, His face was covered in kiss marks

-He was holding your waist and smiling in a very silly way, you were at peace until he heard a knock on the door, he froze- Shit-