Bath Time For A Nympho (Italy 1992, Kristina Gabor, Capucine Laroche)

Nympho is a woman who has a very specific fantasy that she's desperate to fulfill, and she finally gets the opportunity when she meets a man who is willing to make it happen. When they finally have sex, she is thrilled, but then starts to worry that she might not be able to live up to the hype. This novel follows her as she starts to realize that what she craved was just an illusion and that sex is more than just the physical act.