This is just my take on it, but I think:
1. Jeong Ha realizes that he's now at the point where the longer he keeps Sora around, the more he will endanger Sora. Compounds that with Ji Yeonsoo telling him to give it up soon, or Sora will get hurt more, and that just puts the nail in the coffin.
2. Jeong Ha can't stand being in an unrequited love situation any longer, & just decides to end it once & for all.
Jeong Ha acted very mean to push Sora away. Seeing how stubborn Sora is, he won't leave otherwise. As to why Jeong Ha's acting so carefree in this latest chapter, you'll get the answer in the next chapter or two.
thank you so much! i finally get it! hahaha thanks :)
I kinda got confused on the way during the waiting of chapters. Can anybody summarize what just happened or explain to me why Jeongha is acting like that towards Sora? I'm sorry, I'm just really confused in all whats happening right now.