erotic film professional business woman (I think) suspects doctor/psychologist husband cheating, finds woman (turns out to be patient when she sees his book) and has affair with her, but it’s a setup for blackmail. The patient woman is dark-skinned, wife watches her in nude photo shoot on beach, then pretends to be reporter and takes her to lunch to interview her.

There might be a scene in which the wife walks in on a co worker fooling around with boss and she says, “I got ahead in this company with hard work, not by acting like a prostitute.” Later she gets fired and the other woman gets her job/office.

Saw on cable in 90s, I think. It had the same overly-glamorous look as “Secret Games” but that’s not it.  I might be combining the plot from two movies…