"I'm not stupid you know, Cardin, I know what she's been doing behind my back." A dark smirk grazes over Jaune's lips and a look of surprise forms on Cardin's.
"The walls aren't as thick as you two thought. I heard every single thing you told her that night. And to be honest, I did cry at first. But now I see her for what she truly is. Another stain in the world, just like you."
To give some explanation, a few days after initiation, Jaune had gathered the courage to ask Pyrrha Nikos out. It went well for a while, until she confronted him about his skill at fighting. To which he confessed to lying his way in. Unfortunately for them, Cardin Winchester, resident shitstain, heard everything. But instead of blackmailing Jaune into being his bitch, he targeted Pyrrha instead.
In true cuckold fashion, Pyrrha got on her knees that night, and got to work. Her excuse? She 'Just wanted to keep Jaune safe.' Jaune did hear everything, and he made sure Pyrrha's parents, and Ozpin did as well.
That brings us to now. Cardin decided to reveal to the scragly blonde what had become of his distant girlfriend. Jaune only laughed.
"I guess I'm better at keeping secrets than the both of you. I've been seeing Ruby for the past month now. Yang approved of us too, especially when I told her what was going on. You're lucky she didn't kill you then Cardin. Now then, I gotta get going, Ruby's waiting for me to go to the movies. You can keep the whore by the way." He looked back at them with a smirk.
"You better enjoy her too. You only got about forty minutes left in Beacon." And he left in a cloud of smug.