SHINee's Key and Dana appeared on September 18th episode of Radio Star. On the show, they talked about their kissing scene for their musical ‘Bonnie & Clyde’.

Dana stated that she felt awkward at first because they are close. Key blurted ,"Actually we put up a rule that we will not use our tongues," leaving the hosts and even Dana in shocked.

MC Kyuhyun then asked, "Who made that rule?" and Key quickly pointed at Dana, who shouted, "It's you!" and left the set in chaos falling into Key's endless teasing while she's trying to make the MCs believe her.

Check their cute teasing in the clip below: