He's acting jealous while he doesn't have a relationship with her more than like a boss. Just because she said that she wouldn't leave him, doesn't mean she's his property or something. Still don't like him!
Hi! I'm CAtNoir,not ChatNoir!It doesn't have anything to do with Lady Bug,and it's way older than the character. Also don't mind my ranting,I talk under the influence of the heat of the moment.