I'm actually requesting a fic for a friend, as she's not a member of the comm.
What she would like to see is Sam going dark side, but the only person with whom he's still civil/nice to is Dean. However, it's not the best situation for Dean and it eventually drives him insane. She's described it as it being similar to Angel's relationship with Dru from BtVS. Wincest pairing.
Thanks!
buyo105 (for
loverstar), Supernatural, Evil!Sam/broke!Dean, dark themed, 5/20/08