The Fluffer (2001) on Netflix

Plot summary

Sean McGinnis, a student of film, heads to Los Angeles hoping to get into movies. While he waits for work he rents Citizen Kane, but the tape in the box is an adult picture, Citizen Cum, and its lead, Johnny Rebel, becomes his fixation. Sean turns down jobs in the mainstream industry to take a camera position at the company that holds Johnny under an exclusive contract, and on his first shoot he ends up as Johnny's fluffer. He learns that Johnny is really Mikey, works gay for pay and will not kiss other men. He tells his co-worker Silver about his feelings, and Silver calls the attraction hopeless because Johnny is a porn star and straight.