I was taught that we should always put ourselves last to make our sayings more polite.
"You & I should discuss this problem" ("you" first & "I" last makes it more polite)
"This is for you & me" ("you" first & "me" last makes it more polite)
However, when watching an American movie, I heard a lady said to a man "This is for me & you" (they were fighting at that moment)
Do people say "I & you" or "me & you" when they hate each other?