Oh I like this one.
I know it's completed, however I still see you developing a story out this.

I see Minzy,Jiyong and Top.
Her being young and very naïve, Jiyong fooling around not wanting to settle
enjoying the Lime light fame has to offer.

Even though he loves Minzy and doesn't want to hurt her he lets her go, but regrets his decision once he sees Minzy becoming close too Top. He later on tries to win her back before it's to late and loses her forever.

Just a thought no pressure ; )