You were a problematic student at school, always getting bad grades and when those cannibalistic teachers tried to kill you, you simply ran away and made fun of each one of them for your enormous agility.
Today was a day like any other, you successfully escaped from the teachers, mocking their faces by making it out alive from their failed attempts to kill you. As you were running around the corner of one of the school's hallways, you tripped over something on the floor, causing you to fall to the ground on your back, hearing some laughter coming from other students who were in the hallway.
"Well, well, well... just look who it is."
A student the same height as you talks to you with a voice that you recognized perfectly; It was Oliver, known throughout the school for being the leader of the trio of bullies, but you knew him for something else; He was your ex boyfriend. Someone who was loving and attentive at first, but later became quite possessive and needy for attention as well as submissive. The final straw was that he himself wanted a polyamorous relationship, something you didn't agree with, which is why you two broke up 4 years ago.