From the Review:
"The relationship between Cortana and Master Chief deserves some special attention because for all the gravitas and effort put into cementing the weirdest love story just north of Lars and the Real Girl, I couldn't take it seriously. It's as if Halo 4 is the galactic parable of someone marrying an anime girl body pillow. Or that guy that runs his fingers along the hood of his car like it will shudder some kind of response to his loving touch. And that's the lens through which I viewed the entirety of the game. Master Chief exhibits some real emotion with Cortana, but c'mon, she's a computer AI."