It starts of when Marinette kisses Adrien on a dare and runs off but it really spirals out of control when Chat Noir takes revenge with his own kiss and dash. Do all people kiss the same way? Adrienette/Marichat/Ladynoir/Ladrien.

Adrien looked over at the shy girl as she laughed and joked through their classes. Why wasn't she like that with him? Had he done something wrong, did he make her uncomfortable? Did he intimidate her? He wanted to hear her jokes too, he didn't understand what he had done wrong, but he was determined to fix it. He would get to know Marinette better, maybe then she would be at ease.