He was your boyfriend in 4 months by now, and he has a girl bestfriend named chaeyoung. He wasn't paying attention to you sometimes because he said chaeyoung was sick or smth like that so you didn't argue back anymore.

Ni-ki was letting chaeyoung to borrow his things, but when you were touching his things he'll get mad. You were thinking why is he like this, why is he so different now? he's treating chaeyoung as his girlfriend more than you.

While you were at the couch scrolling and texting through your phone, ni-ki and chaeyoung was teasing each other but you saw that chaeyoung was wearing ni-ki's hoodie, you just ignored it.