"Temporal anomaly," Ron said, mostly to himself. "Is that what we're calling time fuckery now?" He had to admit it sounded better than time fuckery, or at least more official. He'd bet Hermione would approve, and he knew Harry would. Harry had a thing about cursing. "But an alarm would be helpful, and if you know a spell maybe we can put you to work with some others." He didn't want to mention the Marauder's Map directly, but if Nott's alarm spell could work with the map, it would be useful.
Ron raised a brow at the flask. "You know, the last time someone drank from a flask like that, it was actually a Death Eater in disguise," he said, though he didn't really think Nott was up to anything particular nefarious with the flash. "Guess it's not your fault there's just something shifty about you." He grinned at the other man, to show he meant no harm with the comment.
"Sure that's true, but it didn't stop a lot of people from exploring. Hormones," Ron said, though Nott had a point. "After the trial...yeah, I could have seen that if it had happened." The obsession had been pretty strong then too; Harry had wanted one family to have a happy ending. "And Myrtle would have liked that too much. She was always spying on people in the Prefects bathroom."