Under a spell you're hypnotized (ooh)
Darling how could you be so blind (snap out of it) (x2)

from Arctic Monkeys – Snap Out Of It Lyrics on Rap Genius

Meaning

She’s blinded by this guy’s love, when really he’s got nothing on Turner. This notion is supported by the classic hypnotic Arctic Monkeys bridge.

Alex implies that her current lover’s feelings aren’t genuine and that she’s just “under a spell”

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