In a similar vein to Marcus, Cass was pretty sure Oliver wouldn't be the most thrilled individual in the world to have him show up. They had never been close in school, and to be honest the idea of spending an entire evening with a bunch of rowdy school kids was not his idea of a party. Especially because he'd been stuck in that same situation all day, every day for the past 9 months. No, he was looking forward to a mostly empty castle and some much needed time with his boyfriend.
So, following Marcus around the hallways, stopping everyone once in a while to snog him senseless, they finally made their way into a classroom. Cassius instantly smirked, moving over to the desk and sitting down behind it, arms behind his neck and putting his feet up on the flat wood.
"So... Mr. Flint, I hear you were needing some extra help on your Charms spellwork, is that correct?" he questioned, instantly snapping into character as an eyebrow went up.