Lee Jong Hyuk kept his date with Park Joo Mee as a secret, and eventually drew out questions.

In episode 10 of 'A Gentleman's Dignity,' a scene of Eun Hee (Park Joo Mee) and Lee Jung Rok (Lee Jong Hyuk) having a date was shown.

This day, Lee Jung Rok tried his best to keep his date with Eun Hee as a secret to his wife Park Min Sook (Kim Jung Nan). Upon hearing her husband's alibi made by his friends, Park Min Sook ordered them- Kim Do Jin (Jang Dong Gun), Im Tae San (Kim Soo Ro), and Choi Yoon (Kim Min Jong)- to get out of her sight.

The four men demanded to know whom Lee Jung Rok had met. However, Lee could not reveal Eun Hee's identity and therefore refused to tell.

Im Tae San checked Lee Jung Rok's cell phone for any clues. He was shocked to find out Lee had stored numbers of multiple women and disguised them as professors, customers, and acquaintances. After getting caught, Lee Jung Rok pleaded his friend to leave to not delete some data and quickly tried to take note of Eun Hee's number.