One afternoon Chaeyeon came home and found Jiyeon sitting in the living room, waiting for her. Chaeyeon immediately knew from her expression she had something serious to tell her but she was still surprised when Jiyeon said she broke up with Hyunggu.

- You broke up... Why? -

- Because I deserve better. I've been living with crumbs for so many years telling myself that he will love me someday as much as I love him. And now I've decided I don't have to live like that. -

- I'm sorry, Jiyeon. -

- No, don't be. I will be okay. - she answered with confidence.

-Yeah, you'll be okay. You will find someone who will love you as you deserve. And Hyunggu... -

- And Hyunggu will find someone who will love him as he deserves. - Jiyeon finished as she smiled and Chaeyeon looked down, feeling guilty.

For the following days, Chaeyeon waited for Hyunggu to tell her his side of the story but her best friend didn't even admit they had broken up. She played the same game and didn't mention anything and she heard from Seokmin that Hyunggu truly believed she didn't know and he was keeping it a secret.

Therefore, on Saturday night, she headed to his apartment with some beer and snacks. She knocked on his door and the moment Hyunggu opened and saw what she was carrying, he knew she was aware of the break-up.

- What are you doing here? - he still asked.

"Acting innocent, I see." Chaeyeon thought to herself.

- Well, because after you break up with someone there has to be some sort of process to heal, and even though people react differently, most methods involve getting wasted, so... here I am. -

- I don't believe in that. I think you heal with time, so... I'll just let time pass. - Hyunggu replied but we know Chaeyeon doesn't take no as an answer and soon, both of them were drunk.

- So my theory is this. - Chaeyeon said, slurring her words. - The Mandela effect does not exist. Our minds just trick us into believing what another person says they remember... and we think we remember it like that too... so we believe it... but it's not true. -

- Like when I said I remembered you paid for the movie we watched the last time, so it was my turn to pay but you said you remembered I paid the last time and I believed you but it wasn't true? -

- Ex-Exactly. You don't remember something and someone says it happened some way and your mind tricks you into believing it. It's all the power of suggestion. -

- Yeah... What about the butterfly effect? -

- The what? - Chaeyeon asked confused.

- The butterfly effect. What do you think about it? -

- I don't know. Why are you asking? We were talking about unicorns. Unicorns existed a long time ago. -

Hyunggu laughed at Chaeyeon and the girl spilled some of her beer on the floor and they laughed harder.

- You're so drunk. - Hyunggu said to her and tried to help her lay on the couch. But Chaeyeon would not budge.

- Why didn't you tell me you broke up with Jiyeon? - she asked instead and Hyunggu stood frozen.

- Because I felt guilty about it. - He replied.

- Then why didn't you tell me that? I'm supposed to be your best friend. Why couldn't you tell me? Why are you keeping secrets from me? Don't do that, Angel. Don't keep secrets from me. -

Hyunggu took a deep breath as he saw Chaeyeon pouting. He felt even sadder and drank more from his beer to gather up the courage to say it.

- Okay, I'm going to tell you something. Because I don't want to keep more secrets from you and because I'm drunk right now. - he started and Chaeyeon sat back up to listen to him. - Do you remember the time we went to the haunted mountain in high school? -

- Oh, yeah. That was so long ago. - she responded.

- Days before the trip, all of our friends kept asking me if I liked you more than a friend. At first, I thought they were just fooling around. Then I thought they were seeing something I wasn't and I realized I was attracted to you. -

- What? -

- I wanted to talk about it with you but you kept making Jiyeon stayed beside me. And that first night, I overheard a conversation between you two. You told her, you and I were just friends. And that I wasn't your type. So I understood it was just me feeling that way and I promised to never tell you to not risk our friendship. The next morning I ran into Jiyeon and she smiled so sweetly at me that I asked her out. But, I always felt guilty about it. I felt guilty because Jiyeon and I started dating when I was having a crush on you. -

Chaeyeon felt like she sobered up when she heard Hyunggu's confession. Not in a million years she had expected for him to say something like that.

- I tried. I tried my best to love Jiyeon... I mean, I do love her... but it just wasn't the same. And I'm truly sorry for that. -

Hyunggu then turned to Chaeyeon and saw how she seemed so taken aback by his words. He didn't want that so he hurried to speak again.

- Don't look at me like that. That was so long ago. Things have changed since then. Me and Jiyeon dated. And now you're with Wooyoung. So, please don't make a big deal out of this. Things changed. -

Chaeyeon hesitated. And the reason was that she was unsure if she should tell him the truth. If she should tell him that on the same trip she wanted to talk to him about her mixed feelings for him.

But then she thought that Hyunggu was right. Things changed for them. Both of them had made decisions that changed things. He now had a history with Jiyeon, a dear friend of hers. And Chaeyeon had a relationship with Wooyoung. Besides, her feelings for Hyunggu had changed in itself. After all, feelings change in a heartbeat.

When she looked back at Hyunggu and saw him so uncomfortable and nervous, she smiled at him.

- Speaking of that trip. I never told you that on the race, I saw three men down the road and over the years, I've become more convinced they were the hikers. - she said.

- What? The hikers? Does that mean that you saw ghosts? -

- Yeah. -

- Then I won. You're a cheater. I won. I won. I won. -

Chaeyeon laughed when Hyunggu kept repeating he won their bet but it was what eased the tension between them. And their prior conversation ended on good terms. And when Chaeyeon left, she just looked at him with a smile.

- You're going to be okay, Kino. You'll see. -

- I know. -

The following weeks, things got a bit chaotic for Chaeyeon. She had to see her boys enlisting to serve the country almost one by one and even her boyfriend. She spent those months visiting them and handling school that was becoming an issue for her. She endured it all in the company of Yeeun since by that time Jiyeon had moved away. And with Eunwoo, with whom