The fourth episode starts with Ju-won and Yoon-seo both recalling their shared memories after their agreed breakup. They try to steer clear of each other at work until Yoon-seo is contacted via text by an unfamiliar number, with the individual stating they are unable to get her off their mind. Even though she first rejects the possibility of Ju-won being the sender, her suspicions increase when she sees Ju-won owning two mobile phones.
Thinking the messages came from Ju-won, Yoon-seo approaches him, only to feel ashamed upon realizing they weren’t his. His second phone is actually a test model from the company.
Afterwards, Yoon-seo confides in I-rae about the unknown person messaging them, and together they opt to dial the number. It appears that someone accidentally texted Yoon-seo. At the same time, Yoon-seo and Ji-suk come to an agreement, with Ji-suk committing to apologizing to his peer and owning up to his behavior. Despite lacking a clear objective, he chooses to get ready for a competitive test as well.
While heading back, they meet Ju-won, and Ji-suk finds out that Yoon-seo and Ju-won are no longer together. Following Ji-suk’s departure, Ju-won questions Yoon-seo regarding the text messages, and she explains they were simply spam. Ju-won suggests switching offices if Yoon-seo is uneasy being around him.
At the same time, Si-won is shocked to discover that his wife has come back from France. He is used to living alone and gets annoyed by the changes in the house, wondering when she will move out. During a flashback, it is revealed that Si-won and his wife, Mi-jin, first encountered each other on a blind date while traveling by plane to Paris. Their marriage was predetermined, and the two are total opposites.
While getting ready for a work trip, Yoon-seo continues to receive additional messages from the unfamiliar number. Annoyed, she phones the person who sent the messages and expresses her feelings about the challenges of dealing with a breakup while getting these communications. We find out that the mysterious texter is a painter who seems to have a curiosity about Yoon-seo.
While en route to the work meeting, Yoon-seo’s coworker’s recently purchased vehicle is involved in a crash, leading Ju-won to come and give them a ride. While in the car, their co-workers grow wary of Yoon-seo and Ju-won as Ju-won’s car Bluetooth links up with Yoon-seo’s phone. The problem worsens when Ju-won mistakenly calls Yoon-seo “honey.” Even though it was uncomfortable, they finally reach the meeting spot, and Yoon-seo is proud of Ju-won for advancing in his career.
At the same time, Si-won is not pleased to find out that his wife intends to remain in Korea for a long time, indicating the loss of his independence.
During the opening ceremony, Yoon-seo makes the decision to resign from her job after realizing that it is not feasible for them to work together any longer. Later that night, she tells Ju-won her decision, causing him to go back home and request his mother to send him overseas. He realizes he will need to fill in for Si-won when his brother and sister-in-law focus on growing the business.
Following a intense disagreement with his mother, Ju-won immediately seeks out Yoon-seo and hugs her, confiding in her that he feels he has no other place to turn. Regrettably, Yoon-seo’s coworkers are present at her home when I-rae shows up and questions if the two have started dating again.
Oh My Goodness! I truly enjoyed this episode. It’s slowly starting to pick up. To be honest, I’m enjoying the second lead couple’s chemistry more but the main lead are also trying their best. However, I’m not quite sure where the plot is heading but we will see.