This is the description:
The story was about Kurt and Rachel secretly being "the King and Queen" of the fanfiction world. I think it was also pre-Puck/Kurt. Puck would catch them in the library geeking and gossiping over their computers and then he started to think that the two were in a secret relationship. Then one day, Puck get's curious about why they are always attached to their computer and steals Kurt's laptop where he discovers their fanfiction.
And this is the link that doesn't work anymore: