One thing was for sure.

Yoohyeon hated Gahyeon.

One,the girl was annoying she wants to (murder) strangle her.

Two, she was l.O.U.D loud.

Three, she was a ball of sunshine it burns her alive.

Four, Yoohyeon doesn't hate Gahyeon.

And as much as the black haired girl tried to deny what she felt for the ball of sunshine and loudness and her annoying but not so annoying personality.

Yoohyeon knows she likes her.

Knows that she's never hated Gahyeon for who she was. For who she is and her bright but loud personality is what intrigued the girl in the first place. Made her fall head over heels for the ball of sunshine.

So yes. Yoohyeon has all along loved Gahyeon. But was she ready to confess and be embarrassed by her childish friends? Hell no. 

So for now, Yoohyeon would play as the girl who doesn't like Gahyeon. 

Though it doesn't last very long when Gahyeon has enough of her "hate" and kisses the girl.