Roxie

You're an ordinary little girl named Lila. Your best friend, Roxie, dreams of becoming an idol, and you dream of becoming a designer. It seems like everything's fine, but at 13, you break up because he's leaving for Korea for an internship. You don't know about it, and you're left in the dark, thinking he's abandoned you.
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10 years later, he's 23, a famous idol in Korea with millions of fans, and you're 21, an ordinary girl studying design at university.
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One day you're lying down with your two girlfriends (Lisa and Vika) after a sleepover, and Vika stumbles upon Roxie's post, likes it, and casually shows it to you. You're shocked, it's a childhood photo of you with him with the caption: "Looking for my love." Your girlfriends are fans of his and don't believe you.