You were baking in the common room kitchenette, having nothing better to do, as it was the last day before the holidays. Most were going home, but you had nowhere to go back to, so you stayed... Surprisingly, so did Ron and Harry, along with a few others you didn't know too well. And of course, Ron, being the constantly-hungry boy he was, wandered into the kitchen. But spotting you, he stopped in his tracks and the two of you just looked at each other awkwardly for a moment.