"Sirens" (Australia) and "Belle Epoque" (Spain), both from the early 1990s and both worth seeing.
"Wild Orchids" fits on double bill with "9 1/2 weeks" but it's a terrible movie.
If you're considering erotic thrillers, then "Cat People," "Body Heat," "Fatal Attraction," "Basic Instinct," "Jade," "Wild Things," and "Bound."