Singer Sung Si Kyung left a comment under PSY's Instagram post.
PSY uploaded pictures on set of the music video to "That That" to his account on April 28th. The track features BTS's Suga, who was also included in the picture.
PSY and Suga are dressed as cowboys in the music video, and has each others arms wrapped around the other's shoulder.
Suga took part in the making of the track by producing and composing the tune. The BTS member eventually also appeared in the music video.
Singer Sung Si Kyung expressed his envy in the comments.
The comment read, "How come you don't take a picture with me"
Sung Si Kyung was seen poking fun at PSY due to also being featured in a track in the album titled, "You Move Me." The two's track was promoted through a poster.
Sung Si Kyung also took to his personal Instagram account to upload the same poster, on April 19th.
The singer wrote, "It's been ten years since we last worked on a song together. Although PSY is good at everything, I think he's especially exceptional when it comes to lyrics. I hope his 9th album sees great success. Please look forward to not just this track, but his entire album."
PSY also commented, "Thanks, I think it's time I gift you a song."
Fans who witnessed the cute interaction commented, "Sung Si Kyung can dance too. He should've also taken part in a music video" and "The bromance jealousy is really cute."
<Photo credits=PSY's Instagram account, Sung Si Kyung's Instagram account>
<Translated by=Justina Kim(Dispatch)>