abused!dean fic where the brothers don't know they're related

[kitsune-kitana.livejournal.com]

I'm looking for a specific fic where Dean was a prostitute when he was younger and was picked up by Bobby (?), who took him in and gave him a job at his garage so that Dean didn't have to sell himself anymore. Grown-up Dean then meets Sam, who is a customer at the garage, and they start a relationship but Sam doesn't know that Dean has been abused.

I remember a specific scene where Sam tries to have sex with Dean, but Dean has a flashback and gives Sam a blowjob instead. Eventually, Sam learns about Dean's history and feels awful that he pressured him into sex at all.

There's a continuation of this story where they both find out that they're actually related, and even though Sam's family disapproves, they continue their relationship.

Any of this ring a bell? Thanks for any help I can get finding this!