To me, real relationships that actually work aren't coddled with verbal cuddling and audible canoodling, but rather develop a working jargon of their own - where the two involved formulate short-cuts and quick talk to express thoughts. Where a look, nod, or punitively raunchy hand gesture can speak a paragraph of mental thoughts. The language develops intensity and closeness as polite etiquette is blown to pieces in exchange for actual significance. Comfortableness which proffers a litany of brusque, socially offensive, sometimes sexually aggressive references. Because there's nothing like knowing someone and being at ease enough to know that your shoptalk can't and won't offend, as the receiver "gets" you enough to understand without explanation.
And this is how Bourdain describes his chef and sous-chef relationship. A mesmerizing unity of offenses that can't offend. Because, to me, "boy and girl" is about holding up the station, playing the game the world will inevitably throw at you - together - without getting bent out of shape. War is tough. Life is tough. And if you find someone who perks your intrest and speaks your lingo, it's how sensitive you are to criticism and perceived insult - combined with how well you give it back - that determines the strength of your connection, not what society outlines the "right" or "correct" thing to say is. It's not how well you act or speak the part but rather how successful you are at back talking society and culture together. Where you both get it, and society is always aloof - where life is always the butt of an inside joke.