Looking for a story

Hello everybody

The story I'm looking for ist about Elizabeth living in London and being in urgent need of money. She meets Darcy by chance and asks him, if he has any rich friends who are looking for a mistress. He doesn't want her to be with another man and arranges for her to be with him (she hast to wear a blindfold). The woman who brings Elizabeth to Darcy is an old friend of Wickhams and tells everything to Wickham who of course blackmails Darcy. Eventually Elizabeth finds out it's been Darcy who she has been sleeping with.

I hope anyone remembers the story, it's been driving me crazy