He took his hands out of his pockets immediately to hug her back. So she was happy to see him. That was a good sign. It was difficult to tell over messages traded back and forth; that was why Harry much preferred talking in person once he could get over his anxiety about it.
"Hey, 'Mione," he said softly. There were about a million things he wanted to say to her, but that was the best he could come up with at first. Harry returned her smile and put his hands back in his pockets once their hug was over, feeling very stupid as he just stood there trying to think of what else to say. He was glad to see her looking cheerful rather than gloomy as he had pictured her. But what if that meant she was over him? Now he was filled with even more doubt and worry.