"I have a girlfriend..."

Shin Aera is seventeen years old. 
Her family is a mess. 
She's just moved to a new school. 
She has a crush on Na Jaemin.
He's the hottest boy in school. 
She should stop dreaming and fantasizing about him. 
Because, even if he likes her back --- which he doesn't --- he's not hers to love. 

He has a girlfriend.