MIMIC (2020)

Evan, an obsessed 22-year-old sociopath, has been pretending to be someone who he isn't. His crush on Alison, a 20-year-old art student, caused him to start copying the way her boyfriend William dresses and the things he is interested in. After being invited to a party at William's house Even is faced with the choice to stop mimicking William or to kill him and take his place.