Demetri looked up at the sound of Harry's voice. He was suddenly nervous at the sight of him given what he and Nell had been talking about. He nodded at Nell, although the awkwardness he felt was not getting better. "It is alright, I did not mind. Knowing Petrov as I do, I was more than happy to interfere with him."
And when Harry rushed to Nell's side, Demetri pushed away on the bench slightly. Harry seemed angry and he couldn't blame him. They should have found him right away. "I... yes of course. I should go. Goodbye Nell. Good evening Harry," he said as he stood up.