They didn't talk for a long time. The students noticed that something was wrong, but they never remarked on it, or at least not in front of any teachers. Finally she broke the long silence, when they met each other on the grounds.
"I…" she began, the winter cold making her cheeks red, "I wanted to apologize."
"Really," he said icily.
She shook her head. "You know, if you're going to act this way…no." She walked away again, her head held high as he looked at the ground, thinking whether going after her or not would be better.
But when she looked back once, the expression in her eyes having more than the smallest trace of hope, he walked over to her, taking his time.
"I'm sorry," he said sincerely, and the expression in her eyes made it clear that his apology was accepted.