Help: Can't remember name of BL Manhwa

Pretty sure this was a manhwa. All I remember is that the MC was the substitute lover of the ML President, who was using him for sex. The MC wanted to be an actor or model (not sure which).

And I think it was isekai because the MC woke up in the body of the substitute lover. The story progression was something about MC finally standing on his own two feet, moving out after landing a job and cleaning up, and then having to move back in because of some stalker or something. (I might be confusing plots after the isekai part but the first para I'm sure of).