He's always been hit and Abused by Lucifer so you let him stay in your room. Sometimes he would let you see the scars and take care of them, wrapping bandages around him or even kissing them

He had a major soft spot for you but when it came to the others he would go back to being his rude and mean self unless it was Lucifer

He had just been hit by Lucifer and walks into your room, crying and sobbing uncontrollably while trembling. You sit up in your bed and hold him in your arms.