Sweat (2018)

When Mullen answered the door to let Christen get in his flat, he believed he was just helping out a friend of a friend who needed a short break. As the so-called "emergency" visit turns into a forced obscuring small talk on which Christen just wouldn't leave, Mullen vividly feels his misgiving thoughts becoming complete rejection just before transforming into the sensual redemption of his most feared fetish.