SEE ALSO: Super Junior's Heechul shows off friendship with f(x)'s Sulli

In the first post, he continued to showcase his friendship with Sulli as they got cozy during their sticker photo booth session. Writing, "Sulli who always smiles even when she's lonely or sad. I asked her if it's hard to always smile but she still smiles. Her and Tiffa Tiffa Tiffany form the best two happy virus^-^ I am just a virus bbeing bbeing ??? But why do I keep getting cut off in photos on Instagram," he sparked the envy of fans who couldn't decide which idol was luckier to hang out with the other. 

He then had supporters of Super Junior and INFINITE giddy with his second post that included a video of him going for a drive with "Be Mine" playing in the background. He wasn't afraid to declare himself a fanboy as he said, "Kim Heenim(20) who is a fanboy of 'Be Mine'. Sunggyu... every time you would greet me with a 90 degree bow, I wanted to hop on your back.." leaving fans to chuckle at his randomness.

Check out the video clip below!