Sana's reaction ^
(But she is not Sana)
Yn then went back to mansion and called jungkook 
Meanwhile jungkook 
He looked at his phone which was ringing and then picked up the phone and answered the call
In call
Yn:"hello! jungkook"
Jk:"hello, what happened? Why did you call me"
Yn:hmm did you have your lunch jungkook"
Jk:"I had! now I'm busy, call later"
Yn:"but jungkook----"
He ended up the call with frustration
_______________________________________
Yn was sad at his rude behavior and called Minho and asked about jungkook. After sometime time she went out to give jungkook lunch at his company.
After reaching at the company she went to receptionist and asked about him.
Yn:"hmm excuse me do I know where jungkook's office room is at?"
Receptionist:"yeah Mrs jeon, Mr Lee will guide you there"
Yn:"thank-you"
She then thanked Mr Lee and knocked the door and heard jungkook saying "come in" she then entered in only to see him looking at the lap top screen....
He was a bit serious when it comes to his company.. and yn was standing there admiring him and jungkook guessed her presence without even glancing at her .
Jk:"why are you here?"
He asked her with his deep sexy voice..
Jk:"I asked you something!"
He spoke a bit louder making her come out of her world .
Yn:"I-I ju-jungkook bought you lunch"
Jk:"I said I already had my lunch"
Yn:"but unfortunately I know you lied to me"
Saying this she laughed at him .
Yn:"alright now have your lunch".
He then opened the box and again looked at her
Jk:"did you had your lunch huh?"
Yn:"yes"
Jk:"really!??". He asked raising his one eyebrow .
Yn:"yes! don't you believe?"
Jk:"no."
He answered playfully to her question. 
Yn:"ok fine now have your lunch"
He then started having his lunch while yn was standing, while facing the glass wall and looking outside