I'm looking for a pre-series wincest-ish fic. Details:

+ Sam is getting bruises from somewhere and Dean can't figure out where.
+ I think at one point John asks Dean about Sam limping and if Dean is watching out for him.
+ What's happening is Dean ("Dean") is forcing himself on Sam. Sam didn't want to tell Dean, says he was handling it.
+ Dean's is possessed by a ghost or cursed or something that requires Sam to do a spell to force the ghost/curse out of Dean.

found: When the Stranger Comes Along by lotrabc