A common mistake in spoken English is to say ‘between you and I’, as in this sentence: It’s a tiny bit boring, between you and I."Between you and me" is the correct way to say or write that statement.
People make this mistake because they know it’s not correct to say, for example, ‘John and me went to the shops’. They know that the correct sentence would be ‘John and I went to the shops’. But they then mistakenly assume that the words ‘and me’ should be replaced by ‘and I’ in all cases.My online editorial style manual has related entries on this term and related words:
between you and I, between you and me Between you and me is both preferred and correct. Why? Because between is a preposition, and grammar rules say objective pronouns, not nominative pronouns, must follow prepositions--or be the object of the preposition. Me is an objective pronoun, and I is a nominative pronoun.