Hm, I think your specific fic might be "Tastes like forgiveness (http://archiveofourown.org/works/449450?view_full_work=true)" by DC_Derringer? It's actually both on LJ and AO3. :)
For dark fic, maybe check out the 'dark (http://destielfanfic.com/tagged/dark)' tag on Destielfanfic? One of my favorites was this serial killer!AU (http://archiveofourown.org/works/803997?view_full_work=true) bij deathtoonormalcy, if you're into that kind of thing.
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Date: 2015-05-08 01:09 pm (UTC)For dark fic, maybe check out the 'dark (http://destielfanfic.com/tagged/dark)' tag on Destielfanfic? One of my favorites was this serial killer!AU (http://archiveofourown.org/works/803997?view_full_work=true) bij deathtoonormalcy, if you're into that kind of thing.
Hope this helps!