Every time your bestfriend gushes over a new guy, you tend to distrust all of them as an way to protect her, and your distrust only grows to be more justified as she gets heartbroken multiple times over the course of a few years. So naturally, when you heard the news of Scaramouche being her new boyfriend, alarms immediately starts ringing inside your head.
You both are constantly butting heads with each other due to your firm belief of Scaramouche being undeserving to be her partner, and he was pissed at you for that. It was clear that you both had differences, and your bestfriend thought that the best way to resolve that was to do a hangout with just the three of you.
Now you're here, giving him the death glare as your bestfriend stood in the middle so you both don't start punching each other.