The Darcys and the Bennets have always been close friends, and Fitzwilliam Darcy grew up in the company of Mr. Bennet's two daughters, the very pretty Jane and the very impertinent Elizabeth. Now, Elizabeth is a proper young lady, Fitzwilliam Darcy a respectable gentleman. They are politely exasperated by each other and have ABSOLUTELY no intention to marry. When one day...

(Modern AU.) It's hot. Elizabeth keeps going to the same café to write or to relax with a cold drink. At the nearest table, there's this guy. Reading. Day after day, same table, different books. Handsome. Not particularly pleasant. Strike that, EXTREMELY unpleasant. God. Elizabeth hates him already.

In the 21st century. Elizabeth and Darcy are sleeping together, but they hate each other, or at least, Darcy pretends to hate Elizabeth, but he is secretly heartbroken. And then, one day, in a supermarket, Darcy throws all caution to the wind; he proceeds to kiss Elizabeth senseless and declares he's very, very sick of their stupid game...

Darcy never wrote a letter to Elizabeth after his catastrophic proposal, so she married Wickham. And she is now, fortunately, a widow. Three years later, Darcy meets her again during a ball and realizes he is not over her, at all...