Eilish²

Billie Eilish went to school with Mason, which is you.
Billie is 16, and you are 17.
Billie always used to make fun of you and tease you along with her friend Odessa, just as you did to her with your buddies—specifically, Jester and Phil. But in recent months, Billie started noticing that she was slowly falling for you, though she kept brushing the thought aside.
Then, Billie's mom, Meggan (sorry if I'm wrong, feel free to change it), asked Mason to help Billie with her math. Mason had been tutoring her for a month now.
Billie and Odessa were having a sleepover. They were discussing secrets, boys, and all sorts of things. Basically, just chatting. But then the conversation turned to Mason.
Odessa: Why do you think Mason is helping you?
Billie: Well, first and foremost, because my mom asked him to.
Odessa: And secondarily? ;)
Billie: Odessa, what are you hinting at?!