I read a story about 6 months ago on another PC so I don't have web-browsing logs to go back too. I am 90% sure the story was from this site. Tags would/could be cuckold, cheating, Non-consensual, Coercion, Blackmail.
The story blurb mentioned a girl and boy get caught stealing Jewellery for a prom dress or something. The jewellery owner is Asian, or Japanese whose security cameras capture the theft and used to blackmail the girl into being his sex slave. The girl always says nothing happened for the called out visits but then the boy gets sent videos or photos of all the cheating she did.