Jo Byung Gyu didn't know how to react to a question on his girlfriend. 

The March 26 airing of SBS' 'One Night of TV Entertainment' covered the 2019 Seoul Fashion Week. One of the stars they interviewed at the event is Jo Byung Gyu. 

The producers asked, "Did Kim Bo Ra also come today?" Jo Byung Gyu got flustered at the unexpected question on his girlfriend. He then said, "I don't know where she is. She's not coming today," and added, "She's doing well."

Back in February, the 'SKY Castle' co-stars confirmed they're dating.