I was reading suggestions about this actually. copied from genius
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I think the term “gemini feed” means that her relationship with the person she’s singing about it something that gemini’s feed on, they feed on that depressive and hardship in relationships, and they’re almost accustomed to having relationships like these, almost like gemini’s can’t help but fall to the same demise as this failed relationship.
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maybe it’s just about Banks who is actually a gemini and her lover who might be also a gemini and they are struggling with similarity. They are too much alike: unstable, bipolar, mostly unhappy.
This is such a grower, it's gone from one of my least faves to one of my faves in less than a day, it was stuck in my head so I played it and it's been on repeat since.