It's winter and they live at the house. Justin calls to say he's leaving Pittsburgh and will be home shortly. There may have been some discussion about the weather. Brian sits down to wait for him - maybe he reads or falls asleep - anyway, he realizes after awhile that it's been a couple of hours and Justin's way late and the weather's gotten a lot worse.
That's the only part I remember for sure. I don't remember if this is just a scene in a longer fic or the fic is a short stand-alone.
Ring any bells with anyone?
ETA: found by
sakesushimaki; it's Xie's
The Thaw.