This site, guys and gals: [link]
Fics I have read:
'Three Thousand Days of Innocence' by cinnamon badge[link]
Believe me, this is amazing.
'Ginny Weasley and the Curse of the Firstborn' by annie penrose[link]
If I've got to rate it from 1 to 10: this is definitely a 9. Beware; it's not a feel-good fic.
'Envy and Manipulations' by rrabbit[link]
Work in progress. This is a very dark fic, but honestly, this is incredibly well written, long chapters and gahh.
'I'm Yours' by rrabbit[link]
Again by rrabbit! This is the beginning of a series, and it has 4 parts! Enjoy!