I think the specific fic you’re looking for is this one.
Us Against The World (http://annie-46fic.livejournal.com/8748.html)
At the age of 10, Jensen had a car accident that changed his life forever. Now at the age of 30 he is trying to branch out on his own for the first time. Jared is abused and mistreated by his widowed father. Friendless and alone, he meets Jensen when the older man moves into one of his father’s apartments. Can Jensen and Jared change their lives? Together they have a chance.

Thank you :)

Pretty sure the fic you're looking for is this one.
http://super-real.livejournal.com/1120775.html

Thanks

these might do for your first request. 2 of my all time favourite series and well worth the read

http://vicious-trade.livejournal.com/tag/sam/dean

Sam thought screwing around with Dean would be easy - he was finally getting what he wanted, and if Dean didn't feel the same way? Well, that didn't matter. He'd play his part and everything would be fine. Except Dean seems dead set on messing with his head, and Sam isn't so sure this was worth all the trouble, after all.

http://rockstarpeach.livejournal.com/80400.html

Dean and Sam don’t like giving head. Which makes sense, because they aren’t gay. They both like getting head though, so sometimes you just gotta take one for the team. Sam decides to take advantage of their arrangement, because Dean’s kind of a jerk.

xxx

Those were both fantastic, thanks!