You need to read the "Fitzwilliam Darcy, Gentleman" trilogy by Pamela Aidan. It's the story of Pride & Prejudice as seen through Mr. Darcy's point of view and it is wonderful! The first one ends just after the ball at Netherfield, the second one is about Mr. Darcy's time in London (the "lost" time in P & P), and the third one begins with his failed proposal to Elizabeth at Rosings Park and goes to the end. The story is so much better than any other P & P "sequel" I've read since it is basically the same story, just from a different point of view.