For everyone questioning the title, "Eve, Psyche and the Bluebeard's wife" are three different women who did the forbidden in their own ways, as the message of this song is that Le Sserafim won't behave like the rules tell and that they will commit whatever is forbidden if they want to. Eve (as in Eve and Adam) ate the forbidden apple just as Eunchae refers to in her verse, Psyche is Cupid's lover who was told to never look at Cupid's real form but she once took a candle to come look at him during the night and got punished, as for the Bluebeard's wife, she was forbidden by Bluebeard to enter a room in their home where she went and discovered all Bluebeard's previous wives dead heads hung on the walls.