Actor Kang Ji Sub fell head over heels for KARA Goo Hara's wink on the recent episode of "Invincible Youth 2."

On June 22 episode of KBS' "Invincible Youth 2," actors Kang Ji Sub and Kang Dong Ho guest starred alongside the girl group G6 members.

In the episode, Kang Dong Ho said that his ideal type of a girl is someone that has a nice smile. The G6 members all started showing off their brightest smiles to win over the hearts of these two men. But it was Goo Hara, who on the episode was filling in for a missing spot for G6, that melted both men with her seductive smile and wink.

Kang Ji Sub who at the time was standing in the back, yelled "That is so sexy!" and took out his smart phone, taking pictures of the singer.

Photo: KBS