The biggest suspension of disbelief required by the audience in Miraculous is us all agreeing to not mention or think to hard about the fact that there is no freaking way Marinette Dupain Cheng wouldn't have realized that Adrien is chat noir yet.
She has eyes on that boy nearly 24/7. I don't care if she's ladybug and thus is often busy when he's transformed, we know they solo patrol, and also he talks to Plagg between fights and such. You honestly think that Marinette, who knows his entire schedule years out, who has stolen his phone at least once, who absolutely can, and probably has, breached Agreste manors security to watch him through his window, hasn't seen him transform or at least talk to Plagg at least once?
At the very least she has to believe he has a secret of some kind. Or an imaginary friend. Or something. Like, Mari is on this boy 24/7.
I am desperatly ravenous for an AU where Mari discovers Adrien is Chat, but then before she can tell him, gets violently reminded of how much Chat hates dissapointing her, and that "failing" her by not being able to keep his idnetity secret would devastate him. Also if Fu finds out then he can't be Chat anymore and she now knows this is his only escape from his dads control. So she just.... desperately pretends she doesn't know.
Only ladybug totally starts flirting back, and poor kitty is not prepared for that shit.
Keep in mind that this is the girl who laughed in Chat's face when he said he was Adrien. The concept of Chat being Adrien is just too ridiculous to entertain, for her.
















