Severus watched as Galen chastised the couple and couldn't help a sardonic smile. he might be alright after all. Though as Galen made his way back to the table Severus made sure to wipe any traces of mirth from his face. He had a reputation to uphold, after all.
He glanced at the books Galen had spread across the table and felt the insidious prick of curiosity. Those didn't look like school books, and he couldn't imagine what homework they might be used for. He quickly looked back up as Galen sat down and offered him a cool nod.