Butterfly Kiss

Butterfly Kiss is a 1995 British film, directed by Michael Winterbottom and written by Frank Cottrell Boyce. It stars Amanda Plummer and Saskia Reeves. It was also released under the alternative title Killer on the Road. The film was entered into the 45th Berlin International Film Festival.

Miriam runs away from home and meets Eunice, and soon becomes her lover and accomplice. At a truck stop, Eunice first offers the unwilling Miriam to a trucker for sex, then rescues her in midrape by murdering the driver. When the hitchhiking duo are picked up by another licentious man, Miriam returns to their motel room to find Eunice and their benefactor having rough sex in the shower. Mistaking the consensual sex for the rape from which Eunice earlier rescued her, Miriam returns the favor by beating their benefactor to death with the handheld showerhead, to Eunices delight. Eunice finally brings Miriam to the ocean, where she makes Miriam kill her.Film critic Roger Ebert, in a positive review, noted that the characters names are shortened to Mi and Eu throughout the film, suggesting that they may represent parts of a schizophrenic personality. ........

Source: Wikipedia