Is it "between you and me" or "between you and I"?
"Between you and me." After a preposition, English always takes the object form.
A little morei
Between is a preposition, and prepositions take objects: me, him, her, us. "Between you and I" sounds more formal to some ears, but it is grammatically wrong — no preposition in English pairs with I. When in doubt, drop "you and" and the answer is obvious.
The full entryii
Usage
Me vs. I
When you’re the subject versus when you’re the object.
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