When Britney Spears sang “A guy like you should wear a warning” in her 2003 banger “Toxic,” the track seemed like a winking nod to a certain kind of recklessness that often goes hand-in-hand with the hedonistic euphoria of really, really liking someone. Digging deeper into the “Toxic” lyrics, it’s clear that like so many pop songs from the early ’00s, it exists in the blurry lines between affection and obsession, and between denial and consent. Fitting, then, that the song about a “poison paradise” plays such a pivotal role in Emerald Fennell’s venomous Promising Young Woman.