There was this story that I remember reading around 2022-2023, and it involved a straight couple traveling to a Middle Eastern country (can't remember which), and during the flight, a wealthy woman approaches them and offers money to have sex with the girlfriend. I think it was a hundred million? However, for each orgasm the girlfriend had, the amount would decrease. The woman had an experimental device that counted orgasms, or something like that.
There was a second part where, after arriving in their destination, the woman has sex with the girlfriend while the boyfriend is sleeping in the same bed.
That's about all I remember, and despite trying multiple different keywords, I couldn't find the story. I remember the author having another lesbian story about a wife being seduced in some church in what I think was a fantasy world, or something like that.
I understand that a name for either the author or the story would be appreciated, but unfortunately, I really don't know. I was hoping the description might be enough.