Justin hadn't expected that, so like Cho he had jumped back a little as well. "I was..." He didn't get to explain that he wasn't going to attack her or anything, because she had already seem to pick up on what he really been attending to do and went ahead and apologised. He nodded and took a step back. He figured she would probably like the extra space now. Justin nodded, again. Half listening, picking up the important details, but really he was more focused on the fact he was sure he had seen her around. Wasn't this the girl that had briefly dated Harry Potter? He knew he recognised her from some of the DA meetings he had attended as well, but he couldn't for the life of him remember her name. Yang something?
"Right, Cho Chang. Yeah, you're in the..." Justin stopped himself, but he knew Cho had probably got what he meant. "I'm Justin. Justin Finch-Fletchley." He ran a hand through his hair, what this girl needed was some tea or coffee or something. "I was just going to get my department some tea, and a coffee for myself, did you want to come along?"