Charly (2007)

Nicolas, an aimless adolescent who hasn't yet found his way in life, leaves his grandparents home, hitchhikes to a small town, and befriends Charly, an outspoken, slightly-older prostitute, a red-haired beauty who appears to ply her trade in the same no-nonsense way in which she clears the breakfast dishes. She seems to find something endearing about Nicolas' mussed hair and dopey face, so she puts him up in the teeny trailer home that she maintains with hilarious fussiness. As their unusual domestic arrangement evolves, each stumbles vulnerably into new emotional territory.