SHINee's Jonghyun revealed that his close relationship to his older sister has caused some misunderstanding.

During the recent filming of SBS' 'Strong Heart', Jonghyun stated, "I have a sister who is two years older than I am, but because we're so close, she's always mistaken for my girlfriend."

He continued, "It's normal for us to walk and hold hands, and we also touch each other's cheeks and kiss the top of our heads," surprising the studio audience.

Jonghyun also revealed that he keeps track of his older sister's curfew and handles issues with her ex-boyfriends.

The November 6th episode of the show will also feature SHINee's Taemin, TVXQ, Lee Jung Hyun, and Park Min Ji as guests.