Super Junior's Kim Heechul was particularly attentive to singer G.NA on a recent episode of KBS2TV's 'Secret'. Throughout the program, Heechul couldn't stop smiling at her and revealed his chivalrous side as he was extremely attentive towards G.NA. Heechul even went out of his way to speak ever-so-gently while conversing with her. However, he openly expressed his disappointment when G.NA revealed the title to her secret as "A hidden man", as she admitted she was a big fan of YG Entertainment's Se7en. The 'Secret' guest line-up for the episode included stars such as Hwan Hee, 2PM's Taecyeon, ZE:A's Hwang Kwang Hee, Rainbow's JaeKyung, etc. The episode aired on the 13th at 5:50PM KST. Source & Image : MyDaily via Nate