Nine 1/2 Weeks (1986)

An erotic story about a woman, the assistant of an art gallery, who gets involved in an impersonal affair with a man. She barely knows about his life, only about the sex games they play, so the relationship begins to get complicated.

The title of the film refers to the duration of a relationship between Wall Street arbitrageur John Grey (played by Mickey Rourke) and divorced SoHo art gallery employee Elizabeth McGraw (Kim Basinger). The two meet and conduct a volatile and (sometimes) violent sex life.