Light Sleeper

Light Sleeper is an American drama film written and directed by Paul Schrader in 1992. It stars Willem Dafoe, Susan Sarandon, and Dana Delany.

John LeTour, a 40yearold New Yorker, is one of two delivery men for Ann, who supplies an exclusive clientele in the banking and financing sector with drugs. While Ann contemplates switching to the cosmetics business, LeTour, who suffers from insomnia, has lost his perspective in life.One night LeTour meets his former girlfriend Marianne, who both once shared an intense but destructive relationship due to drug abuse. Although they stopped taking drugs, Marianne refuses his offer for a new start. After spending one night together, she tells him that this was her way of saying goodbye. Unbeknown to her, her mother died at the hospital while she was with LeTour. The next time he meets Marianne, she attacks him, demanding that he gets out of her life once and for all. ........

Source: Wikipedia