It took Taeyeon another four months before she found herself ready to have the talk with Seulgi.

It took a lot of strength for her to be able to acknowledge the massive shift that having these feelings for the younger artist has sparked within her - she never saw herself wanting to be in a romantic relationship with someone, but here she is.

It's downright scary. It has thrown her off her center and changed everything she believes in.

But she wants this. For the first time in her life, she found herself wanting something like this. She wants to be with Seulgi.

And she will tell her that tonight. 

On this Friday night, she will in a way, change the rhythm they've established. Instead of Seulgi going to her apartment, she will go to the latter's place instead to tell her that she's ready to be with her. 

What Taeyeon didn't know was that something else will change that rhythm, however.

When she opened her door to leave, she saw someone standing in front of her. 

It was Joohyun.

And on that night, the seventh entry was added to the lexicon:

Step back, step back.

Taeyeon just doesn't know who should step back - her or Joohyun.