Greg's head had stiffened at Severus's words, "His father is dead?! But how did he die? Do you know, Sir?" and he looked intently, frowning even.
He shook his head in some disgust, frustrated with himself for being gone, "I got burnt and then locked up and I never got a chance to find him, to be sure he was okay," and as he spoke, Greg started to show his worry more, rubbing his thumb across the palm of his opposite hand in distraction, "I should have tried harder. I should have left them all. Blast it all!" he said, and then he realized who he was swearing in front of. Greg colored slightly, "Excuse me please, Sir, this is all new news to me and I.. I am not taking it very well."
At Snape's last words, Greg looked at his hands, and gave a sigh to let his shoulders drop, "I can look after him, Sir. We were...in school we...we meant a great deal to each other," and he raised his eyes, looking directly at Severus, "I love him still, as much then as I did now. And I know if it was me in there, he'd do everything he could to get me out so he could tend to me. I know what he likes, how to calm him down. I know him, Sir," he said, his eyes hard and slightly defiant. And then the realization of who he was challenging struck him and he blanched slightly but didn't drop his gaze.