Taeyeon and Jessica were close when they first debuted but as time passed by, Taeyeon began to hang around Tiffany more while Jessica stuck along with the safer members such as Yoona, Hyoyeon and Seohyun, basically all of them except for Taeyeon and Tiffany. Some members are oblivious to Jessica and Taeyeon drifting apart while some are not so oblivious. It starts from drifting to avoiding, avoiding to ignoring, ignoring to resentment... Mental illnesses, abuse and M rated scenes are