It's a puzzle, isn't it?

Indeed it is! But first, this great T-shirt I just saw: black on red, it depicted a chimp in a Che-style hat, over the slogan "VIVA LA EVOLUCION."

Now, a word puzzle. The answer is a sentence that looks like this: "You're my _ _, _ _ _ _ _." Each underscore represents a word. The letters of one word after the comma form an abbreviation for the words before the comma, while the remainder are all the same letters, in the same numbers and the same order, as the first word before the comma. The phrase preceding the comma is listed in the American Heritage Dictionary of the English Language.

Enter your solution as a comment below. I'll give the answer next week.