The pair are a well-loved couple on SBS' hit drama 'I Hear Your Voice', and Lee Bo Young recently sat down with 'One Night of TV Entertainmnt' to discuss the show. 

The reporter asked, "Is it true that you banned Lee Jong Suk from smoking hours before a kiss scene?" She responded, "It's true. I told him that he couldn't smoke starting from at least 3 hours before a kiss scene with noona. I hope what I said doesn't air," making everyone laugh.

Fans commented, "So he smokes," "That's so adorable," and "Lee Bo Young knows how to set the rules."

SEE ALSO: K-netizens spot a surprising trend of Ahjussis (middle-aged men) dominating attendance at the LE SSERAFIM concert