Confusion strikes again: What is a couple?

The Oxford Dictionary definition accurately represents how the word "couple" is used in general conversation. I am using the term in a more precise way, as a social scientist might use it. (I am a social scientist.) I attempted to define the word, as I am using it, to aid our understanding each other.

I agree that it is pointless to argue over what the definition of a word should be. But you evidently do understand how I am using the word. My claim is that the concept of a "couple", as I have defined it, is useful in bringing into sharp relief a fundamental issue that is raised by the news of a Christian Church embracing and legitimizing queer sexuality. To embrace the idea that queer sexuality is legitimate, i.e. that "anything goes", one must reject the idea of the couple, as I have defined it. If, in nature, the male-female couple is something special and significant, and can be distinguished from, say, male-male intimacy or male-horse intimacy, then it is important and useful to remember that ideas about "couple" might not apply, or not apply as well, to other kinds of pairings.

Please note that, according to the Oxford Dictionary, a male-horse pair is a "couple" if the male has such close feelings for his horse that he engages in acts of sexual bestiality.