Messy drama + groveling ex + obsession + maximum school-days nostalgia
Back in school, Qi Yu was aloof. Shan Fufu was so captivated by his looks that she chased after him relentlessly for years.
Shan Fufu: I like you. You should like me too!
Qi Yu:
Shan Fufu: I'm done with you. I hope you're unhappy for the rest of your life.
Four years after giving up on him and leaving
Qi Yu: She hates me. What should I do? *sobs*
Shan Fufu: What is wrong with you? You're so full of yourself. If you don't like me, stop hanging around me.
In short, it's the story of an insecure, sensitive boy who can't trust that someone so dazzling could truly like him. He keeps testing her limits and trying to find out if she cares about him, until he takes things too far.