Love Streams

Love Streams is a 1984 American film directed by John Cassavetes that tells the story of a middleaged brother and sister who find themselves caring for one another after the other loves in their lives abandon them. The film was Cassavetes 11th and penultimate film. He later made the more mainstream Big Trouble.

Roberts son is terrified by the hedonistic and decadent world of his father, and begs to be taken home following an overnight trip to Las Vegas. After dropping him off, Robert is beaten up by the boys stepfather, after which his son testifies his love for Robert.Fleeing the scene, Robert returns home to take care of his sister, his best friend. Sarah tries with some success to curb the nihilistic selfdestruction of Roberts life and simultaneously deal with her own depression and divorce, while Robert struggles between his intense desire to protect his sister, and the challenge of accepting her freedom as the necessary cost of love. ........

Source: Wikipedia