Her Name Was Christa (2020)

Stephen, a lonely and jaded middle-aged telemarketer, begins seeing prostitutes at the behest of his coworker Nick. Stephen eventually settles on one named Candy, paying her to act as his girlfriend. He and Candy gradually develop genuine romantic connection.

Stephen requests days off from work to take Candy on vacation, but is rejected. Furious, he attacks his superior and is subsequently fired. Stephen confesses to Candy that he has lost his job and can no longer afford her, but she assures him that she is genuinely in love with him and will continue seeing him regardless, and reveals that her real name is Christa. The two agree to have sex, then Stephen falls asleep while Christa showers. When Stephen wakes, he discovers that Christa has secretly taken drugs in the shower and died from an overdose.

Devastated, Stephen begins hallucinating that Christa is still alive and resolves to keep her body. Over the course of the next months, he continues a romantic and sexual relationship with Christa's decomposing corpse under the delusion that she lives, and the smell begins attracting the suspicion of his neighbors. The hallucinatory Christa informs Stephen that her body will eventually completely decompose, and that he must commit suicide for the two to continue to be together. Stephen resolves to shoot himself, but just before he could do so, he is arrested by the police.

Stephen is taken to a mental hospital, where he willingly commits himself. Two doctors discuss his case, revealing that his coworker from his telemarketing job, Nick, does not exist. Stephen imagines himself with Christa again, then secretly kills himself by slitting his wrist in order to reunite with her.