Love to Hate Me (Kim Sunoo) 18+

Cho Ruhee's in the best part of her final year in high school, finally an adult. Exam stress all done, friends all secured. She's learnt how to present herself, and is even quite popular.
One thing she hasn't learnt however, is why Kim Sunoo won't lay off her.

Sunoo says that he hates Ruhee. He apparently hates that people actually like her, he hates that she's always scored better, and he hates that she's friends with his friends. He hates that he's expected to like her just 'cause he's popular and so is she. He allegedly hates everything about her. He claims the only reason he annoys her is 'cause she's easy to rile up. And yet she's the only one he lets touch her after the incident at 16. She's the only one he's ever told about the incident at 16.

How many times can they go from enemies to lovers, and back into enemies, before they find out if they're meant to knock out each other's teeth or makeout?

"It would really help me right now if you left me the fuck alone, you know?"

"But where's the fun in that, sweetheart?"

"Not here."

"Let me make it more entertaining then."