ahhhhhh!!! I've been looking for this story for ages!

further details that may help: Jared's the mail room guy at Jensen's workplace, which is how they become friends, Jensen has a younger brother who is developmentally disabled (which is a source of tension for JDM/Jensen and but whom Jared adores), Jared leaves town immediately after the threesome to go care for his mother who's dying of cancer, Misha lives in the same apt. building as Jared and they hook up casually.

whew.