I've got butterflies in my stomach- (michael afton x Yandere reader)

The origins.

As you walked towards your high school, a large figure wearing a Grey tank top and a red fox mask popped out of the bushes, and scared the sh*t out of you in the process. Your friend, (you choose her name.) Leaped  up and punched him square in the face. She immediately apologized, "sorry mike, you scared us!"  He retorted with "you guys were scared by that!? That scares my Lil bro!"
She glared daggers at him, and he immediately backed off. You decided to speak. "c'mon (bff/n)! He Was just poking fun!" You didn't want to admit you were standing up for him because you were crushing on him, because you would never hear the end of it, plus, he was standing right there! After that, you, (bff/n) and Michael, walked to school.

--time skip to summer vacation--

You, your friends, Michael, and his friends decided to hang out for the summer, and you guys went swimming at the lake very often, almost everyday, as it was extremely hot this summer, and none of you had a pool at your house, and the community pool was disgusting, plus, you all knew a secluded spot where no one would interrupt your hang out. This happy summer vacation ended when Michael invited you, his friends, and your friends to his little brother, Evans, birthday party, which was at the crappy pizzeria/diner, with the creepy animatronics, even though Evan was scared off them, and begged mr. Afton not to, but of course, mr. Afton was extremely cheap, so he ignored his son.
The day of his birthday, turned bad at exactly 3:47, on a Saturday, on July 28th, 1983. Him and his friends showed Evan into the yellow bear- fredbears mouth, and he bit down. It was all over, you were sure, but when you all arrived at the hospital, it was revealed he was only in a coma, and had a 17% chance of waking up. Mr. Afton was beyond angry, he was furious with Michael. His friends, stayed at the hospital and begged Mr. Afton to not call their parents, all of their parents believed in physical discipline. Eventually, the parents of the four bullies decided to separate the troublemakers, the other three bullies moved to different neighborhoods and schools, and their parents changed their numbers, your friends decided to ignore michael from now on, you, his cat, cheetah, (yes, I gave michael a cat named cheetah lmao, also no, I will NOT be killing off the cat, this is not a very sad story.) And his mother, Mrs. Afton, were his only support. Then, it happened, his mother died, as her work building caught on fire, there were no survivors.