"Shit," Tonks catches sight of her watch as her wrist moves across the parchment. "Is that really the time?"
"Looks like it", yawns Remus, setting his inkwell aside. "I think I will call it a night." Their chairs scrape on the flagstones.
"I'll come up as well. To my room, obviously," she adds hastily, but she's said it and now they're both thinking it. Tonks's quill rolls off the table and clatters on the stone floor.
He's aware of the awkward smile he's making by the pain in his cheeks as he backs away until the doorknob hits him in the back. "Well, goodnight then."