Heart Signal

The reality show follows eight people living together for one month as they get to know each other and go on dates. Every night, each cast member sends an anonymous text message to another cast member to show their romantic interest. However, they are not allowed to directly confess their love. Meanwhile, a panel of celebrities and experts watches the show, analyzing the cast members' actions and trying to predict who will text who.^[5][6]

Season 1^[7]

• Yoon Jong-shin
• Lee Sang-min
• Kim Eana
• Yang Jae-woong
• Shim So-young
• Shindong (Super Junior)

Season 2^[8]

• Yoon Jong-shin
• Lee Sang-min
• Kim Eana
• Yang Jae-woong
• ONE
• Soyou

Season 3^[9]

• Lee Sang-min
• Kim Eana
• Yang Jae-woong
• Han Hye-jin
• Yoon Shi-yoon
• P.O (Block B)

Season 4^[2]

• Yoon Jong-shin
• Lee Sang-min
• Kim Eana
• Kim Choong-gi
• Kang Seung-yoon (Winner) -> Kim Jin-woo (Winner)^[10]
• Mimi (Oh My Girl)

Season 5^[3]

• Yoon Jong-shin
• Lee Sang-min
• Kim Eana
• Roy Kim
• Tsuki (Billlie)

Summarize Timeline Top Qs Fact Check

Season 1^[7][11][12]

Season 2^[13][14]

Season 3^[16][17][18]

Season 4^[19]

Season 5^[20]
  Male participants
  Female participants

Heart Pairing (2025–2026)

The spin-off follows ten individuals who are looking to marry as they live together for a month in the "Pairing House" located in Tuscany, Italy, and Seoul. Initially, the cast members are paired blindly based on shared values and interests, such as their favorite books, before seeing each other's faces. The show tracks the participants as they evaluate practical lifestyle habits to find a life partner. Meanwhile, a panel of celebrities and experts watches the interactions to analyze the contestants' compatibility and predict their final pairings.^[21][22]

Panelists

Source:^[23]

• Yoon Jong-shin
• Lee Chung-ah
• Choi Si-won
• Mimi (Oh My Girl)
• Park Ji-sun

Cast

More information Name, Birth year ...

Name	Birth year	Occupation	Notes
Shin Woo-jae (신우재)	1990	Painter
Ahn Ji-min (안지민)	1992	Strategic planner for Samsung (Graduated from Department of Electrical Engineering at Sungkyunkwan University)
Lee Chan-hyung (이찬형)	1992	Doctor and businessman (Graduated from College of Medicine at Hallym University, Master of Medicine and PhD at Seoul National University)
Park Chang-hwan(박창환)	1984	Pilot (Graduated from Department of Aviatiom Transportation at Korea Aerospace University)
Lee Sang-yoon(이상윤)	1996	Model (Graduated from Department of Physical Education at Dongguk University)
Lee Je-yeon (이제연)	1995	Lawyer (Graduated from Department of Public Administration and Law at Yonsei University)
Moon Ji-won (문지원)	1999	Semiconductor Engineer at Samsung (Graduated from Department of Electronic Engineering at Kookmin University)
Joo Ha-neul (주하늘)	1998	Dancer and model (Graduated from Department of Performance Arts and Master's at Korea National Sport University)
Bae Chae-eun (배채은)	1996	Researcher (Graduated from Department of Natural Science and Media Studies at University of Toronto)
Kim Soo-a	1993	HR Team employee (Graduated from Hankuk University of Foreign Studies)

Close

Final Results

Confession Result

Participants
Lee Chan-hyung	↔	Bae Chae-eun
Shin Woo-jae	↔	Moon Ji-won
Ahn Ji-min	↔	Lee Je-yeon
Park Chang-hwan	→	Kim Soo-a
Kim Soo-a	→	Lee Sang-yoon
Lee Sang-yoon	→	Lee Je-yeon
Joo Ha-neul	→	Ahn Ji-min

Seo Joo-won from Season 1 got married in 2018 to YouTuber Aori (Kim Min-young) and got divorced in 2022.

Kim Do-gyun from Season 2 got married in 2022 to a non-celebrity who is a yoga instructor. Im Hyun-joo dated actor Kwak Si-yang between 2023 until November 2024. Lee Gyu-bin from Season 2 proposed in 2025 to model Ahn Sun-mi, and the couple announced their engagement.

Park Ji-hyun from Season 3 got married in 2023 to a non-celebrity who is a businessman.

Shin Min-gyu and Yoo Yi-soo from Season 4 dated between April 2023 until late 2024. Kim Ji-young from Season 4 announced her marriage to a non-celebrity and pregnancy in January 2026.

Ahn Ji-min and Lee Je-yeon from the spin-off, Heart Pairing, dated until October 2025. Shin Woo-jae and Moon Ji-won from the spin-off are still currently in a relationship.

Season 1

In 2019, Heart Signal cast member Kang Sung-wook was sentenced to five years in prison for sexually assaulting a woman in August 2017. Fellow cast member Jang Cheon reportedly initially served as Kang's lawyer in the case but resigned after six days.^[24] Kang's sentence was reduced to 30 months in prison in 2020.^[25]

Season 2

Heart Signal 2 cast member Kim Hyun-woo was arrested for drunk driving in April 2018 while the show was airing.^[26]

Season 3

After the cast members of Heart Signal 3 were publicly announced, a woman accused cast member Lee Ga-heun of bullying classmates. Cast member Cheon An-na was also accused of bullying. The show's producers denied the allegations.^[27]

While the show was airing, another woman told the media that cast member Kim Kang-yeol had kicked her in the stomach at a nightclub in January 2017. Kim admitted to the incident and apologized on social media.^[28]

In May 2023, Yongsan Police Station in Seoul applied for an arrest warrant for Seo Min-jae on charges of violating the Narcotics Control Act. This suspicion was raised when Seo Min-jae made an SNS post revealing that she and her then boyfriend, Nam Tae-hyun, took methamphetamine in August 2022. In September 2022, the police finally collected the hair and urine of Seo Min-jae and Nam Tae-hyun, who were suspected of violating the Narcotics Control Act, and requested an appraisal from the National Institute of Scientific Investigation (NFS).^[29]

Season 4