Erotic thriller, swimming pool

hi to all i need help finding some sort of erotic thriller movie about some rich couple seeing (the wife is blond and and the husband is with black hair) some naked women by a q swimming pool and then they have a threesome with her and she disappears and the husband trying to find her. thats pretty much all i can remember. appreciate the help!

I've changed the thread title to be more descriptive, per the warning beneath the title field:

Could it be Francois Ozon's "Swimming Pool"? It's not exactly the way you describe it, but maybe memory is misleading you...

Wild Things 1998 ??

I vote “Swimming Pool”.

sorry guys its not wild things or swimming pool, i checked

I think i have seen that but i cannot remember the title
. Give me some time and i might find it.