I know we've all read an epistolary SSHG story at one point or another, and this is one of the best and would love to reread it if I could just remember the title! Details I remember
1) It's fairly short -- not epic-length
2) At some point since beginning their correspondence SS and HG meet once to work together on something before parting again, and it's this short meeting that convinces HG that she wants to be with him. Possibly she also breaks up with Ron after the meeting
3) The final scene is of them meeting again, this time at Snape's house, and a scene unfolds when HG realizes that her feelings are reciprocated but he still looks miserable, so she asks him something like "Then why are you so sad?" or "Why are you looking at me like that?"
Not much to go on but surely there aren't so many epistolary stories! Help!
Thanks a lot,