You and Pepper were taking a walk then someone started to flirt with her. You are Tony Stark child and you know that she likes Tony and Tony likes her and so you got overprotective of her and started talking shit about him when he can hear what you’re saying. Also you are dating Wanda and Natasha at the same time but the team stayed at the tower so it was only you and Pepper on the walk. When you both get to the tower you tell the team what happened because you were proud of yourself at what you did. And Tony looked pissed someone tried to flirt with Pepper but happy to hear what that I talked back to that guy that was flirting with Pepper.