In real, spoken English, "Me." In the made-up rules of grammar books that think English should work like the classical languages, "I". To make everyone happy, you can say "I broke it."
– Mike GrahamDec 28 '19 at 19:48
In all varieties of English, real or fake, spoken or written, the answer is "me", and I don't know of a single grammar book that would say otherwise. https://english.stackexchange.com/a/4655/300
– RegDwigнtDec 28 '19 at 20:28