A Change in the Weather

If you haven't seen it yet, please go see the fanvid akemi42 made in response to my winning bid on livelongnmarry! It's Snupiny and just wonderful. Some days, it's good to be a fangirl :D

I'm looking for a heart-breaking Snape/Lupin story, the longer and angstier the better. I mean one that really tears your heart out and cuts it into pieces and jumps on it and boils the pieces up and ends that way. Come to think of it, other pairings would work too, Snape/Harry or Snape/Draco especially.

Anybody got a rec, or a fic of your own to share? It's not a subgenre I'm very familiar with :).

*eta* A little poking around has brought up On the Shoulders of Giants, so hopefully I will read that today and report back. Any others?