Chanyeol was smart, very smart, the smartest one in his class

Chanyeol was smart, very smart, the smartest in his class and in fact one of the Top 10 at the exams every year, holding his position proudly.

But he wasn't very smart when it comes to love,

he was young at heart,

something you would simply call unexperienced.

Baekhyun was outgoing, too outgoing, too flirty, too seductive,

the most outgoing in his class and in fact the tiest person of the whole school, holding his position proudly.               

But he wasn't very smart when it comes to studying or learning,

                                                                                   something like that was too bothersome for him,                                                                                   

he's something you would simply call dumb.