Future Lover (1994)

In the near-distant future, a female romance writer is planning to write her next book in a remote mountain cabin. A friend convinces her to bring along a "companion", a nearly-human android to cook and clean. She settles on a male companion named "Geoffrey." Bored with some of Geoffrey's behavior, she tinkers with his programming -- first his personality, then his sexuality. Real trouble comes when she gives his mind access to "random data."