They used to love, They used to be together.

They used to be each other air, They needed each other to breathe

They went on their separated way just because of one mistake.

It breaks Taeyeon, Jessica, Yoona and Sooyoung heart. They didn't have or given a chance to explained to their lovers. They still chasing over them until one day they found out that their lovers has found their replacement. Will they start to give up ? Will they continue fight for their love ?

Taeyeon love Sunny.

Jessica love Tiffany.

Yoona love Yuri.

Sooyoung love Hyoyeon.

They always will.

How about the other four ? Does their love to their past lover still there ? Can they ever forgive them ? Can they left their current lovers for their past lovers after knowing the truth ?

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"Will he loved you like I loved you ? Will he tell you every day ?" - Taeyeon

"If only it were me instead of him .. " - Jessica

"Does he sing to all your music when you dance to "Purple Rain" ?" - Sooyoung

"It should've been me instead of him in the dark .. " - Yoona