In "Heard it Through the Grapevine" Ko Ah Sung acted out of the ordinary and Suh Jung Yeon also proposed to Huh Jung Do.

On the 13th episode of SBS Monday/Tuesday drama "Heard it Through a Grapevine" (script Jung Sung Joo, director Ahn Pan Suk) broadcast on Apr. 6th, Yeon Hee's secretary Sun Sook (played by Suh Jung Yeon) proposed to Kyung Tae (played by Huh Jung Do) who was her tutor.

On this day, Sun Sook started to talk about the other madam Suh Bom (played by Ko Ah Sung)'s sister Suh Noo Ri (played by Gong Seung Yeon). She was going out with sons of millionaires and because of this Yeon Hee was upset. After sharing this with the owners of the house, someone asked whether Noo Ri would be able to be a daughter-in-law of a rich family as well. Sun Sook said that that rarely happens and that Suh Bom's case was something akin to winning the lottery.

With that, they spoke about the legal status about being a wife. Suh Bom who overheard said that if the secretary married into the family, she too would become a madam, which made many laugh. This was because they supposedly knew about Sun Sook's scandal.