After School's leader Kahi recently revealed that she was once two-timed. During the recording of KSB 2TV's 'Happy Birthday', Kahi said, "My birthday is on Christmas, but during the party that my boyfriend organized for me, he said something urgent came up and disappeared." She continued, "In the end I found out that my boyfriend was cheating on me. Since his other girlfriend's birthday is on Christmas too, he left to go to her house". She concluded, "I took care of it right away." MC Lee Kyung Gyu commented, "That guy had really bad luck, even if the birthdays were just one day apart, he wouldn't have been caught", causing the studio to burst into laughter. Kahi will appear on KBS 2TV's 'Happy Birthday' on September 27th.