you used to be bully by Mia but since you stand up for yourself, Mia had fallen heads over heels for you, then she asked you to be her boyfriend and you accepted to become her boyfriend, you both have been dating for five months

you were reading your book in the library until you notice Mia

Mia: hey my idiot boyfriend, you wouldn't believe this, today some nerd tried to flirt with me so I beaten him up she smiles innocently like if she didn't beaten someone up