"I see. I assume you used this opportunity in all your classes? Or just in Miss Lovegood's? And the opportunity was enhanced by trying to embarrass the poor girl?"
"So you would have me give her special treatment? Just because she's dallying with Potter?" Severus spat the last word.
"No, I expect you treat students with respect, and not add insult to the very real injury that the Prophet tried to give her," Filius said.
Severus just scoffed.
"Furthermore, if anyone's giving her special treatment because of her relationship with Mr. Potter, it's you, Severus."
"Watch yourself," Severus warned.
"I'm serious. You're a stern teacher. I understand that. I question its pedagogical value, but it's your style, and if you applied it consistently, I wouldn't be here. But to kick a student when she's down, to single her out for humiliation, to question her morals like that... it's beneath even you, Severus," Filius said.
Severus took another step towards the diminutive Charms professor.
"Be very careful what you say, Filius."
"Oh, indeed I shall, Severus. You consistently give Harry Potter and his friends a far more difficult time than any other students, even other Gryffindors, and we both know why, Severus."
"I've had enough of this. Get out now, before I get angry," Severus seethed.
Filius ignored him. "You think you're immune from consequences, just because Albus has some bizarre loyalty to you."
"Gone whining to him already, have you?" Severus smirked.
"I complained, yes. I didn't expect any result, and my expectations were met, sadly. But Severus, you forget that I remember when you were a student, and what that was like for you. So if I hear of you humiliating and attacking the morals of any of my students again, I am going to use some of your adventures with James Potter and his friends as examples for my class, and like you are so eager to do, I will name names." Filius smiled jovially. "As I recall, they were sometimes quite imaginative with their charms work. And I imagine those stories would be very popular amongst the students."
"I would think very carefully before doing that," Severus said severely.
Filius shrugged, "You seem to think humiliating people works as a teaching method. Sauce for the goose, Severus. But I suspect it won't come to that after our little chat."