Body Chemistry 3 (1994)

Body Chemistry III (1994) follows Dr. Claire, now played by Shari Shattuck, who is naked for at least half of her screen time. She is now host of a cable TV talk show. Andrew Stevens is a made-for-TV movie producer, and wants to make her story into a movie. His wife, actress Morgan Fairchild would do nearly anything for the lead, as she has been trying to break out of her mold as the mousey woman on a soap. Chick Vennera, who plays the associate of the lab director who was killed in number one, has written a screenplay of the story. Dr. Claire seduces Stevens repeatedly before she agrees to the film. Claire isn't into pain in this film, but is into danger to increase the excitement. She is constantly seducing him when his wife is nearby. Lots of nudity, and reasonably hot simulated sex.