"Ah..." Serenus smiled sheepishly and rubbed the back of his neck, knowing there was no way to bluff out of this one. Turning to Tybalt, he brushed a swift kiss to his cheek. "No, caro, I was just having a little fun, that's all."
He turned back to the young woman, his expression partially apologetic - the part that wasn't reminiscent of a boy caught in mischief. "It really is Mister Snape," he said. "My name is Serenus, and I'm former Professor Snape's brother." He held out his hand, smiling. "You must be one of his former students. I apologize for the ruse, but it was too great a temptation to resist."