I'm Your Man || RadioApple

Alastor and Lucifer have been dating for only a year. As any relationship, they have had their ups and downs... but some of those downs began to weigh on Alastor's conscience.
After discovering his feelings for Lucifer, Alastor has been nothing short of obsessed and in love with the devil. Alastor isn't used to being romantically involved with anyone, let alone someone he used to have a rivalry with. He makes mistakes, but perhaps his worst mistake has been putting his beloved king on a pedestal. Doubts fill his mind, comparing himself, a lowly sinner, to someone as amazing and strong as Lucifer, the King of Hell.
Every fight begins to weigh further on Alastor's mind, that weight growing heavier every time he sees Lucifer cry.

TWs// Mentions of s/h