Programmed for Pleasure (1981)

A sci-fi writer, Nicolas (Richard Allan), is endowed with a very demanding sexuality that exhaust his partners. They all leave it after some time weary of his virility out of norms. After several disappointments, he finally finds the ideal partner- a robot that he makes with his hands and programs to obey his will. But the creature (Marilyn Jess) turns against his master and transforms him, in turn, into a sexual toy.