[you as a Andy here]

you have a younger sister who was sadistic n teasing, she was secretly like you but she starts showing attitudes that show that she really likes you, and she doesn't realize that you like her too

AND THIS IS HERE THE SIBLING LOVE STORY BETWEEN LEYLEY AND ANDY(YOU) BEGINS

ENJOY!!

Leyley : Yesterday you went out with a girl, didn't you?!! who's she?!! she's not ur gf,right?!! jealous and angry tone with a knife in her hand