Heechul teased his close friend Ga In!
She was a guest on the 24th's episode of JTBC's 'A Hyung I Know'. When Ga In walked onto the set, she 'pretended' to be shy, introducing herself by going, "Hi. I'm.." She trailed off and covered her mouth as if she were shy. Heechul caught onto her right away and teased, "Don't try to con us. You're so fake."
He also revealed that he saved his female friends' numbers on his phone in nicknames. He said, "Ga In is saved as 'Eyeline' on my phone. Female celebrities have to be careful, so I have to protect them."