"Because you were the one all over him!" Yes, he was being stupid, everyone knew he was being stupid, it was just hard to tell what the real reason was. Did he really fear that Harvey was going to steal his boyfriend? No. Straight and very uninterested Harvey gave no vibes otherwise. If anything, he shoved Edward away when he got too close but there was Oswald, upset over it. Projecting, as always. One bad day and everything else had to spiral like this.

"You're not allowed to tune me out. Don't you dare tune me out or I will have Butch shoot you." Or he'd try to get that to happen. It didn't happen last time. Butch mostly just went to the kitchen to make a snack and left Oswald throwing a vase instead.