The upcoming episode of 'Happy Together 3' will feature 4minute's Gayoon and B2ST's Kikwang showing off their fun friendship as the former dished on how much the latter loved to be called 'oppa' (what younger girls call older boys).

She said, "I first met Kikwang oppa when I was a trainee, but it was awkward because we couldn't establish a ranking.  The company told me to get along with Kikwang oppa like friends because we were born in the same year.  However, Kikwang oppa approached me cautiously and asked me to call him oppa.  

Honestly, Kikwang oppa and my birthdays are only about 40 days apart, but he pretends to be an oppa because he was born early in the year."

SEE ALSO: Jang Geun Suk shares post-cancer ambition: earn more, give more

She also revealed that whenever Kikwang talked to her, he would refer to himself in 3rd person with "oppa~," making everyone laugh.  

The episode will air on Thursday!