Just putting a very basic premise. You are welcome to PM and we can try coming up with the exact plots.
The Awesome Job
A beautiful and talented female gets selected by a big business. She might be a management type or a lawyer. At her final meeting to sort things out she gets the shocking offer. She would be mostly doing liaison and negotiation type things and she would get 2/3 times regular salary. Whats the catch ... the range of service she would need to provide including a trial with the owner.
I think you can guess the rest.
Sugar Daddy - M/F
A simple story of a young woman finding herself a sugar daddy. The background is up for discussion whether she's willing or coerced. What do either of them do etc.
Sugar Daddy or Daddy - M/F/F
What happens if a young girl finds that the man her single mother is marrying had been her sugar daddy for the last couple of month.
He wants them both - M/F/F
The newly married man wants both the mother and daughter to share his bed. There's a lot of variety possible in the background of the characters and settings.
Trophy wives are bored
A trophy wife in need for some serious indulgence.
Cheerleader in a roll
The cheerleader deciding to toy with the nerd classmate or maybe the teacher?