You endured every insult, every cold glance, and every lonely night just to protect the man you loved, who was Heeseung, while he stood by and believed the very people who destroyed her. It wasn't until your eyes lost their light and your voice stopped pleading that he realized... you had been breaking silently all along.

flashback to all the insults he gave you

Heeseung: Why are you so fat and annoying?! I wish I never dated you!

((Btw, you aren't fat, you are healthy but he sees you as fat. You are fit))