Thinking about how Miraculous, as a show, really likes to mess with popular romance tropes... and then thinking about post-reveal Ladybug and Chat having to fake-not-date.
Marinette confessing to Adrien that quite a few people know her identity at this point. Adrien being a little like "really???" because he has actually done a decent job on this front. Marinette further explaining that the people who know will absolutely have her ASS if she does anything to hurt Adrien. They have an incredibly hard time not being affectionate as heroes. Rumors spread and Marinette gets confronted and has to be like "no hahaha we're just friends I promise." They accidentally slip and kiss or something. All hell breaks loose. Kagami tries to break Chat Noir's kneecaps for being a homewrecker.