Heart Signal - All Episodes
Season 1
| Episode | Name | Airdate |
|---|---|---|
| S01E01 | The Six Residents | Jun 2, 2017 |
| S01E02 | Do Their Qualities Make Your Heart Beat Faster? | Jun 9, 2017 |
| S01E03 | Clueless Guy, Friendly Girl, and the Reason They Can't Date | Jun 16, 2017 |
| S01E04 | After the Date | Jun 23, 2017 |
| S01E05 | Push and Pull, and the Start | Jul 1, 2017 |
| S01E06 | Bluff or Truth - What's at the Bottom of the Guys' Hearts? | Jul 7, 2017 |
| S01E07 | The Girls' Secret | Jul 21, 2017 |
| S01E08 | Change Makes Us Grow | Jul 28, 2017 |
| S01E09 | Triangle | Aug 4, 2017 |
| S01E10 | The World You Live In | Aug 11, 2017 |
| S01E11 | For a Happy Ending | Aug 18, 2017 |
| S01E12 | Eight Heart Signals | Aug 25, 2017 |
Season 2
| Episode | Name | Airdate |
|---|---|---|
| S02E01 | The Six Residents | Mar 16, 2018 |
| S02E02 | The Man in the Mysterious Room | Mar 23, 2018 |
| S02E03 | The Christmas Gift | Mar 30, 2018 |
| S02E04 | The Christmas Date | Apr 6, 2018 |
| S02E05 | Two Hearts | Apr 13, 2018 |
| S02E06 | The Last Resident | Apr 20, 2018 |
| S02E07 | The Girls' Secret Date | May 4, 2018 |
| S02E08 | Someone Who Understands Me | May 11, 2018 |
| S02E09 | The Girls' Secret Date: Part 2 | May 18, 2018 |
| S02E10 | Double Date | May 25, 2018 |
| S02E11 | Two Weeks Left | Jun 1, 2018 |
| S02E12 | The Last Date: Our Winter Trip | Jun 8, 2018 |
| S02E13 | The Signal Your Heart Sends Out | Jun 15, 2018 |
Season 3
| Episode | Name | Airdate |
|---|---|---|
| S03E01 | The Six Residents | Mar 25, 2020 |
| S03E02 | Occupation Disclosure | Apr 1, 2020 |
| S03E03 | Midwinter Cosmos | Apr 8, 2020 |
| S03E04 | First Date | Apr 22, 2020 |
| S03E05 | Goodbye First Love | Apr 29, 2020 |
| S03E06 | Lion's Move-in | May 6, 2020 |
| S03E07 | Lion Effect | May 13, 2020 |
| S03E08 | Welcome "Puppy" | May 20, 2020 |
| S03E09 | Women's Date | May 27, 2020 |
| S03E10 | Hidden Emotions | Jun 3, 2020 |
| S03E11 | Apply For a Secret Date | Jun 10, 2020 |
| S03E12 | The Wind Blows | Jun 17, 2020 |
| S03E13 | Before the Storm Comes | Jun 24, 2020 |
| S03E14 | I Don't Want to Regret | Jul 1, 2020 |
| S03E15 | Confession Day, Last Choice | Jul 8, 2020 |
| S03E16 | Special - Recent Interview & Unreleased Video | Jul 15, 2020 |
Season 4
| Episode | Name | Airdate |
|---|---|---|
| S04E01 | Heart Signal is Back | May 17, 2023 |
| S04E02 | Grocery Shopping | May 24, 2023 |
| S04E03 | For You, Without Your Knowing | Jun 2, 2023 |
| S04E04 | The First Date | Jun 9, 2023 |
| S04E05 | A Face-to-Face Talk | Jun 16, 2023 |
| S04E06 | A New Occupant | Jun 23, 2023 |
| S04E07 | Truth or Dare | Jun 30, 2023 |
| S04E08 | The Long-Awaited Dates | Jul 7, 2023 |
| S04E09 | Complicated Feelings | Jul 14, 2023 |
| S04E10 | Wrong Time | Jul 21, 2023 |
| S04E11 | The True Feelings | Jul 28, 2023 |
| S04E12 | The Last Trip | Aug 4, 2023 |
| S04E13 | The Second Date in Yeosu | Aug 11, 2023 |
| S04E14 | The Last Chance | Aug 18, 2023 |
| S04E15 | The Final Decisions | Aug 25, 2023 |
| S04E16 | After Signal | Sep 1, 2023 |
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