My First Mister (2001) on Netflix

Jennifer is a seventeen years old misfit punk teenager that uses piercing, tattoos, wears only black clothes and dyed hair, self-inflicts injures and has fixation for death. She misses a father and a normal mother, since Mrs. Benson has trouble in the communication with her, and feels absolutely rejected. While looking for a job, she meets the forty-nine years old Randall Harris, a lonely man who owns a shopping store, and he hires her. They are opposites but with loneliness and lack of friends in common. They become close friends, and their interaction changes their behavior for good while secrets and feelings are disclosed.