Closing the Stable Door by kroki-refur
[http://kroki-refur.livejournal.com/112213.html?mode=reply]
Sam's got a secret, and Dean's going to find out what it is.

Heavy Affliction
[http://www.fanfiction.net/s/5316145/1/Heavy_Affliction]
On a hunt, Dean and John learn some things about Sam he has been holding out on.

Unhappy Birthday by phx
[http://www.fanfiction.net/s/5948780/1/Unhappy_Birthday]

Past Indiscretions by Bazunga
[http://www.fanfiction.net/s/7882433/1/Past_Indiscretions]

Live To Regret It by morgana07
[http://www.fanfiction.net/s/6485484/1/Live_To_Regret_It]
Visiting Bobby after Dean is hurt on a hunt an accidental encounter brings back bad memories for Sam. When Dean learns the reason for his little brother's reaction, all bets are off and someone learns what it means to mess with a Winchester.