Perfect Marriage Revenge Season 1 Episode 4 A Line to be Crossed ( Air Date 2023-11-05 ) Genre Drama category. Overview "The next phase unfolds in Yi-joo and Do-guk's contractual marriage as their families meet for the initial discussion regarding their impending union. Jeong-hye remains oblivious to Yi-joo's orchestration and her amazement deepens when Yi-joo presents one of her replicas as a surprising gift. Despite the surface portrayal, Yi-joo employs stern language with Do-guk, reminding him not to cross boundaries in their feigned marriage. Do-guk struggles to mask his evident disappointment.".