Nocturne (1990)

Sinopsis

Martin, a young classical musician, moves to New York City and lives a closeted gay life. He meets Gino, an acting student at NYU, and they begin an affair. What starts as a one-night stand for Gino quickly turns into an obsession for Martin. As their relationship develops, Gino helps Martin accept his sexuality—but the connection is soon overtaken by obsessive jealousy.