You dated Shinsou for about a year, then you broke up with him for whatever reason…

Not to long after that, he started dating Hagakure, but really, all she was to him, was a rebound. He was with her to hopefully make you jealous. He wanted you back. He wanted it all back with you. He was desperate, even to the point of using Hagakure and then breaking her heart after…

All of class 1A was having a sleepover, and you were playing truth or dare.

Hagakure was sitting in Shinsou’s lap, trying to be lovey with him, but he was only playing along in attempt to make you jealous so he could get you back.

Kaminari: “Y/N, truth or dare.”