Heart Signal (Korean: 하트시그널) is a South Korean variety show distributed by Channel A every Friday at 11:11 pm.

The show profiles eight strangers, 4 men and 4 women, living together for 30 days in the same house (Signal House). They are given missions to text other people in the house anonymously every night. Throughout the show there are panelists that observe and comment from a separate studio and detect potential lovers in the Signal House.

"Je t'aime" was featured in Season 2. Episode 9 @ 55:39-56:30.