specific fic, Dean/Castiel with outsider POV - FOUND!

Hello!

I am looking for a specific Dean/Castiel fic, which begins with a teenager who played a prank on a retired Dean's house. He's forced to help Dean clean up the house and slowly begins to develop a friendship with him. It's a great outsider POV, especially when the teen overhears Dean and Sam arguing about a mysterious lost friend. Then it turns out the teenager was actually Castiel all along, de-aged and temporarily amnesia'd for some handwave-y reasons I can't recall now.

I've tried all my Google skills but since I know neither the author nor the title I'm drawing a blank. Help would be appreciated!

ETA: Found! Thank you!

[identity profile] elbereth-lvae.livejournal.com 2013-03-28 03:48 pm (UTC)(link)
I just read it last week! It's [livejournal.com profile] yellow_pomelo's By Some Unseen Light (http://yellow-pomelo.livejournal.com/9731.html). Enjoy!

(Anonymous) 2013-03-29 03:52 am (UTC)(link)
Thank you so much!

[identity profile] ndmzero.livejournal.com 2013-03-29 04:22 pm (UTC)(link)
for anyone this is the link for the story on AO3

http://archiveofourown.org/works/660385/chapters/1204351