Specific Sam/Cas friendship fic

[yellowbulma.livejournal.com]

Hello my lovely's!! After re-watching Supernatural season 6 final last night I really need to find an old Cas and Sam friendship fic. 

I'm looking for a specific Cas and Sam friendship story I read awhile ago and thought I bookmarked!!! But of course I didn't, My Bad. XD

Don't remember a lot but there is a few part's that come to mind.

Anyway what I can remember about the fic was each chapter was based on a different Supernatural episode for example The Curious Case of Dean Winchester. When Sam go's to get his "boaster shot" he was in the waiting room at the doctors and he found a little bouncy ball. Cas shows up and they talk, I think Cas asks why Sam is at the doctors etc and Sam gives Cas the ball.

Another chapter was set in the 100th episode Point of No Return. It was from the opening scene when Sam finds Dean at the motel, and when Dean starts yelling at Sam, Cas hears what Dean say's and is upset with Dean for saying those things to Sam.

If I remember correctly the ending was sad because of course Sam ends up in the pit. The very last scene was Cas standing where Sam fell into the pit and saying good bye.

Any help is most welcome!!

Also I don't think it was on LJ or Fanfic.net.   

FOUND!!! Link in comments ^^