Harry hesitated, momentarily baffled by the odd greeting and the question both. He glanced over his shoulder as though half expecting to see someone else there. "I guess so," he said finally, shrugging. His relatives didn't much like him wandering around the streets, but because they didn't like the neighbours to see him, not because they were worried about his being alone. It was a weird concept.
Now that he was closer he could see that this man did look a lot like him, right down to the eyes - there was something not quite right about that but he couldn't quite remember all the details of what Ginny had said. And yet there was no joyful father/son reunion so far, and now he wasn't quite sure what to say. "Excuse me, if it's not a rude question..." he began, swallowing hard. "Are you my... my..."