In Business Proposal Episode 3, Unintentionally, Kang Tae-moo (Ahn Hyo-Seop) and Shin Ha-ri (Kim Sejeong) kissed when Shin Ha-ri saw her brother and father approaching towards her, she smacked Tae-mu Kang in the head, and he lost consciousness the instant she hit Kang Tae-mu. Shin Ha-ri accepted Kang Tae-Moo’s contractual fake girlfriend proposal and signed the contract after Kang Tae-moo placed pressure on her to file a complaint against her. Kang Tae-moo had Shin Ha-ri memorise his profile information before meeting with his grandfather. Kang Tae-moo issued a warning, “You have a meeting with the chairman(his grandpa) coming up next week, so memorize the script thoroughly until then. Errors will not be tolerated.”
Shin Ha-Ri prepares a recommendation presentation of chef Lee Min-woo, her team members compelled her to give a presentation in front of Kang Tae-moo. Shin Ha-ri, fearful of being detected by Kang Tae-moo, feigned to be sick by sneezing, put on a mask, and presents the whole presentation she had prepared, just escaping detection. When Shin Ha-Ri visits Chef Min-Woo she finds him with a girl and sees them kissing (his ex-girlfriend). She hurriedly lefts the restaurant. Tae-Moo calls Hari but her phone slips in the drainage and she start crying remembering the recent events, Tae-Moo was listening to her weeping on the other side of the phone and murmurs why is she crying, what the hell happened to her.
After that, Shin Ha-ri met with Kang Tae-moo and his Grandpa for a meeting, Grandpa mistook one of the servants as Tae Moo’s girlfriend, later Tae-Moo clarifies him. “Do you love Tae-moo?” Grandpa inquired of Shin Ha-ri. “Then why did you break up?” Shin Ha-ri replied, “I love him.” “He appeared to think that work was more important than me,” Shin Ha-ri said, her face flushed with embarrassment.
‘He will continue to keep his work prior to you in the future as well, Grandpa asked Shi Ha-Ri for an explanation. I know and now it is ok with me as he once came to woo me on a rainy day, which he hates so much. “Why did you tell him I was running to you on a rainy day?” Kang Tae-moo asked Shin Ha-ri after lunch, in the absence of Kang Da-goo. “I believe you misunderstood, but we are dealing with a straightforward financial transaction. Don’t use your extra mind, do what you are told of.
Grandpa asks Ha-Ri, if she wants to eat dumplings, while eating dumplings and drinking with grandpa she drops her bag and, grandpa sees a concert ticket that had fallen out of the bag. He then persuades Tae-Moo to go to that concert with Hari and he droves them himself to the concert location. Lee Min-woo had given Shin Ha-ri this concert ticket as a gift, and Shin Ha-ri cried as she remembered her 7 years of unrequited love.
Kang Tae-moo secretly delivered the handkerchief to Shin Ha-ri after noticing her crying at a concert. Kang Tae-moo offered her own awkward comfort to Shin Ha-ri, and Shin Ha-ri apologised for her earlier behaviour and expressed her thanks. ‘Do you cry so easily’, Kang Tae-Moo asked her, I heard you crying on the phone yesterday, he added. “Did you have a crush on him alone for 7 years?” he inquired of Shin Ha-ri. She’s been happy for the past seven years “she confessed and she is happy now as his ex-girlfriend is reunited with her friend.
Kang Tae-moo was told by Shin Ha-ri, “Instead of false dating, try real dating. Spending time on a date right now may seem inefficient, but I believe it will pay off in the long term. You can get married, and if you date a fake like me, you won’t have a future and is a complete waste of time, which you hate so much” she suggested. Later, they went to eat something, while eating with Kang Tae-moo, Shin Ha-ri was hit by a baseball.
In the ending of Business Proposal Episode 3, Shin Ha-Ri was scared that Kang Tae-moo would find out who she was by seeing her bruised eye. The next day when she went to the office, she encounters Kang Tae-moo in the elevator.