Everything about her was toxic from the very start.

From the way the girl had pulled up in front of her apartment drunk.

From the way of how easy it was for the intoxicated girl to have Bora under her drunken spell. Literally.

In that instance she should've known.

Bora should've known that Lee Siyeon was going to ruin her perfectly good life. Her perfect relationship with her girlfriend. Her friends. And most importantly...

Herself.

Siyeon was toxic.

And Bora clearly knew. Everybody could clearly see Lee Siyeon wasn't good.

Bora knew and she ignored them.

In the end Bora lost herself.