One night, Bogum and Irene are texting with each other..

Bogum

Irene-shi.. Did you watch my drama just now?

Irene

No.. Why would I watch it :P Anyway, what is going to happen in the next episode? Who is going to end up with Duk Seon?

Bogum

Eyyy.. I thought you said u didn't watch it.. Hahaha.. Secret.. U must watch it till the end if u want to know it :P

Irene

Hahahaha.. Come on! I'm your noona!! U must tell me!

Bogum

No! ur not my noona.. Ur my girl.. but because ur my girl I'm going to give u a hint at this upcoming friday

Irene

Who is your girl?! From now on.. you have to call me noona! Understand?! Okay! I can't wait for the hint! (Irene was so shy when she sees that Bogum call her his girl)

Bogum

Its ME who said ur my girl. What if I don't want to call u noona, Bae Joo Hyun-ah?! hahahaha 

Irene

Yah!! Mr Taek (Bogum's character in Reply 1988) you are going to get a proper lesson from me if you do that again! ahhahhah anyway, bogum, I got to go now! Goodnight! :)

Bogum

Uuuu.. Can't wait to get a lesson from u!! Goodnight Bae Joo Hyun ;)

At the Music Bank studio after rehearsal,

"Annyeong Irene-shi!" said Bogum

"Annyeong! Faster tell me the hint!" said Irene

"Aigoo uri Irene just can't wait!" said Bogum while pinching Irene's cheek

"Yah! Bogum! What are you doing! I'm your noona! Faster Faster!!" reply Irene while both her hands are at her waists showing she is angry

"Okay noona!" said Bogum obediently

"If you want to get the hint.. you must help me act this script. Okay?!" said Bogum

"Okay! Okay! What should I do?" said Irene excitedly

"Just sit there quietly and watch me act. You'll be Duk Seon. After i ask why did you lie.. then, you read this.." said Bogum

"I'm going to start. Are you ready?" ask Bogum

"Yes! I'm ready!" said Irene

"So.. That was not a dream?.. Why did you lie?" said Bogum acting seriously for one of the scene in Reply 1988 

"I was scared.. We're friends.. Wha