zooeyrye posted a request for Brian/Hunter fics. It reminded me of one I recently reread, but I can't remember the title.
It's a post-513 fic. Justin is is NYC, and Brian is missing him terribly. Brian/Justin are the focus of the story, but there is a small side plot:
Brian runs into Hunter at the diner, and the two of them begin meeting for clandestine trysts. Just when the reader wants to smack Brian in the head, Debbie-style, it is revealed that they are meeting so Brian can give Hunter driving lessons. Hunter's ex-girlfriend has jumped to the same erroneous conclusion as many readers, but Brian sets her straight by explaining that he's sort of Hunter's uncle and teaching him to drive. Brian talks the ex into giving Hunter a second chance.
Update: It's
From a Safe Distance by
bigboobedcanuck. And as
vlredreign has pointed out, the story takes place while Justin's in LA, post S4, not NYC, post S5. It's well worth a read in any case!