On the June 2 airing of SBS Power FM 'Choi Hwa Jung's Power Time', Song Yoo Jin, Seo Moon Tak, and Jo Hyung Kyun of the musical 'Rocky Horror Show' joined as the guests. 

During the broadcast, Jung Kyung Ho surprised all by sending a sweet text message to the show in support of Sooyoung's sister. He texted, "Our Sooyoung's older sister Soojin also appears on 'Rocky Horror Show'. Fighting!''

SEE ALSO: Brother of popular actress named as suspect in ex-girlfriend's death

Jung Kyung Ho and Sooyoung have confirmed to be dating in 2012.