9 1/2 Weeks
Starring Mickey Rourke as John Gray and lots of Kim Basinger as Elizabeth McGraw, 9 1/2 Weeks was an erotic drama released in 1986 (there were two direct-to-video sequels in 1997 and 1998). The movie received mixed reviews in the USA, and was ultimately a flop stateside, but was a huge success internationally, thus ultimately turning a major profit.
This is the movie about the jaded 9.5 week sexual relationship between two consenting adults, an art gallery owner named Elizabeth (Basinger), and a business man named John (Rourke). She is drawn in by John's playful demeanor and lavish gifts. However, John pushes Elizabeth further and further into experimentation until she emotionally breaks under the weight of it all. Still, she finds it difficult to break free of him, but does so in the end.