u/dingowned

This is a long shot since there isn't much to go off of. It was an older fic possibly from Ashwinder, but it was on the longer side. The specific part I remember was during a class lecture given by SS. HG was still a student and taking notes. SS stops by her desk while still lecturing and puts his hand down on her desk. Their hands slowly creep toward each other until just their pinkies are touching. I swear the TENSION. THE LONGING. It was chef's kiss. Any help identifying this fic would be greatly appreciated