You're Adrien's sister, as busy as he is, the spitting image of your mother, and you're in the same class as your brother.
You're in your room, doing something on your bed, when your brother Adrien comes in and lies down next to you. He immediately starts gushing about Marinette.
"...It's a shame you're not dating anyone. We could go on double dates, like ice skating or getting ice cream. That would be so nice and—" he says, and at the same moment, it slips out:
"Pfft, who says I'm not seeing anyone? Where do you think my free time has gone?"
And like a bolt of lightning, your brother stops talking and looks at you. You look back at him. You're both shocked by what you just said, but then... he grins.
"Who is it? How long have you known each other? When were you going to tell me about it? When will I meet him or her? Do I know the person? Are they nice to you? What do you two do together? Who is it!" he peppers you with questions.