Luhan and Yoona were walking towards the trashcan when Luhan suddenly said, "Look, it's Yixing." Yoona's eyes widened. "Really? Where?" Luhan stopped. Yoona stopped, too. "Towards our way."

Yixing was leaning down, helping his companion carry some plastic bags. He then started to walk and he passes by Luhan and Yoona. Yixing saw them and Yoona was surprised that he didn't even acknowledge them but before they entirely passed by each other, Yixing suddenly nodded at Luhan and Luhan did in return but Yoona felt the awkwardness between them and all she can do is smile (awkwardly too). 

So who is Yixing? Yixing is actually Luhan's closest friend when they were in sixth grade- like Yoona's male version. They were so close that Yoona actually thought they'll forever be stuck with each other but then misunderstandings and miscommunication screwed it up and it's like it never existed. 

Yoona finally got to threw her Sprite float cup and the first thing she said was, "Don't you ever do that to me when you meet me after so many years. Don't you dare ignore me." 

Luhan laughed. "Oh, I'll do that to you. I'll pretend you don't exist." She knows he's mocking and so she retorted, "Tsk. We should be even, I'm going to ignore you too and by then I'm so fab, you'll regret it." Luhan laughed louder and she joined in. 

Though at the back of Yoona's mind, she thinks, I don't think I'll ever forget you to ignore you.