Lots of people have recommended this:

Title: Pensieve
Author: Oy! Angelina
Rating: PG-13
Genre: Romance / Humor
length(optional): novel
Other Ships:
Location(URL): http://fanfiction.portkey.org/read.php?storyid=316
Warnings:
Summary(optional): She's a Prefect, He's a Marauder; one interpretation of how Lily and James fell in love ( along with the rest of MWPP) during their 6th Year and all the humor, drama, and mystery that came with it. Rated for slips of the quill and mature content
Optional User Comments: See this for endorsements of this story

Wow, thanks for recommending me! Pensieve is a joy for me to write because it has introduced me to some really wonderful people online. Anyway, I'm glad people like it and I'll try to keep it interesting and entertaining.

for those interested I have a member's group (I didn't make it though I wish I had thought of it first). Please join if you have the chance or desire to. It's got some interesting stuff posted on there and the members (113 last count) are a pretty funny group to listen to on the posting boards.

Oy! Angelina's Pensieve Yahoo Member's Group

Again, thank you for nominating me and I hope people will keep reading Pensieve. If anyone has any questions or comments and don't feel like reviewing please post and I'll be happy to respond. I've gotten a couple questions now and again that people are curious about and I hate to leave my fans in the dark.