"I'm Blaise," Blaise said as he offered his hand for Harry to shake, figuring that that would be the polite thing to do now. If nothing else, he can always socialise a bit with Draco's flatmate, maybe learn a little bit about what he is up to, even if Harry seems woefully unaware of his flatmate's comings and goings.<br/>"And not to worry. I think that we all feel the urge to question people suddenly appearing at our door," he said, wanting to be polite and nice, at least while he is waiting for Draco to return to the flat.