This is my GRBB fic. It's waiting for official posting in the GRBB comm by the artist. My bad, though, for being slow to finish the story. The artwork is really cool so I'm looking forward to it being posted.
You can see the story over here, though. (Porn-free, sadly. More of a cute fairytale.)
http://archiveofourown.org/works/720786/chapters/1336358