Holidays are for Suckers by Kiernan Kelly

Ebenezer Spooge is an adult film star who specializes in holiday films. Until today, that is. Today, he’s determined that his life will take a new — and abstinent — turn. After a terrible fight with his director, he swears to give it all up, live a clean, boring life, and never need to worry about fluffers, lubricant, or multiple takes again.
Gorg is an alien from a galaxy far away who crash lands on our little blue planet right in Ebenezer’s backyard. Although Ebenezer refuses to believe Gorg is real, and that everything he sees is an illusion or delusion, Gorg refuses to give up. Gorg is entranced by the holidays and by the lithe little human who hates them and everything associated with them and is determined to bring joy back into Ebenezer’s life.