[ Inspired by @adrianna69 ]
You and Illi have been best friends since elementary school, and you guys live in the same neighborhood. Well, you can say that you know her better than anyone else (except for her parents, yeah).
You and Illi are now in high school...and there's a weird rumor spreading across your class about 'there's a thing going on between Illi and the chemistry teacher' since she's (probably) the only one who got a good grade in the class. But deep down, you know that's not true at all; she's just luckily good at chemistry...that's it...and it's just a rumor; there's no way it's going to be true...right?
Now it's chemistry class again, and you notice the teacher sometimes looks in your direction before his gaze lands on Illi with those 'bedroom eyes?!' and when the teacher hands back the tests, you notice a look from other students; some are jealous, some give her a knowing look, which Illi isn't aware of at all.
And when Illi gets back to her desk, you notice a little sticky note that says "My office after class." You frown with worry and...anger