"Pretty Boy" Jang Geun Suk finally realized that Lee Jang Woo has feelings for IU.

On the fifth episode of KBS 2TV Wednesday Thursday drama "Pretty Boy," (script You Young Ah, Production Lee Jae Sang, Jung Jung Hwa, and Shin Yong Hwee) which aired on December 4, 2013, Dokko Matte, played by Jang Geun Suk, realized and felt jealous of David, played by Lee Jang Woo, who has feelings for Bo Tong, played by IU. Dokko Matte with the help of one of the customers of Il Rek Sun Nyeo, Kim In Joong, suggested Bo Tong to visit Kim In Joong in the insurance company Kim In Joong works, and sell some socks, since Kim In Joong was a good friend with the CEO of the MG home shopping department.

Bo Tong sold socks in the insurance company while Kim In Joong was working in the office. Kim In Joong, who had remembered the talk with Il Rek Sun Nyeo, approached Bo Tong and spoke with her. Kim In Joong helped out Bo Tong to sell socks, and eventually Bo Tong was able to sell socks on the MG home shopping.

Dokko Matte, who felt successful for selling all the socks and also thankful for Bo Tong for letting him realize the importance of making money by putting the effort, visited Bo Tong to let her take ten pictures of him as she had wanted.

However, when Dokko Matte visited Bo Tong, she was holding hands with David and celebrating the successful sale of the socks. While Dokko Matte watched David feel happy for Bo Tong, Dokko Matte realized that David likes Bo Tong, and felt weird jealousy, suggesting the triangle love relationship among Kim Bo Tong, Dokko Matte, and David.