Twist #2; the return

I stumbled back with my mouth agape. I must be hallucinating. Sora must have mixed some sort of drug inside that lipgloss because there is no freaking way my one and only ex-boyfriend is standing in front of me, staring at me with those doey puppy like eyes that made me throw my heart at him blindly at one tragic point in my life. "What...the... hell?" I whispered.   Chanyeol's eyes shifted back and forth between my tear stained cheeks and eyes as he said, "Are you okay?"  "What are you doing here?!" I whisper-yelled at him.  "Look Hana, I know you might be taken aback with my return. I know you probably hate me now. But you really did not spare me any chance to explain myself back then. You just up and disappeared from my life. I was devasted you know?" "Oh poor you Chanyeol. It must have been SO hard for you. You're right, I hate you. I actually despise you and your manipulative self," Chanyeol flinched. "I don't know why you are here. I am tired of running though. So please leave me the alone and don't bother with any explanations. What we had is already history."  I straightened my back and brushed past him with my head held high.  I surely seemed like a mess. But never will I ever let that person see me as the same weakling from the past. I was a mess, but I was no weak mess. I was a mess with a back-bone. ___________ I entered the classroom and beelined to my seat. My head was spinning with the amount of information that just got thrown at me within a span of few minutes. So let me get this right:  My boyfriend is cheating on me. My best friend is ing my boyfriend.  My boyfriend and my best friend had planned to play me together.  My ex-boyfriend, first love, worst regret etc is BACK.  Okay. Well....  The bell rang and all the studies hurried to get inside the classroom, including Sora and Baekhyun. Both of them entered separately as if they don't even know each other. As if they weren't making out just minutes before. This, my friend, is what we call professional acting.  My eyes met Sora's and she smiled sweetly at me. I faked my fakest tight smile and waved at her. Unfortunately, I was deficient in "fakeness" so I couldn't act as good as her. The teacher entered the class a few minutes later, with a giant trailing behind him. The giant was my ex, unfortunately. That height which once made my heart flutter now made my stomach fill with disdain. For a year after we broke up, I avoided tall guys like the plague. It reminded me of him. It reminded me of what he did to me.  "Everyone, we have a transfer student," The teacher announced with a smile.  I could practically hear the thirst of all the girls in my class as soon as they took in Chanyeol's undeniable good looks.  "Hello," Chanyeol's started with his deep voice, "My name is Park Chan Yeol. I used to study in Busan Dong School before. I am still not very used to the city life here. Please take care of me. Thank you."  Every girl in the class "aw-ed" at his adorable dorkiness. Except for one;