I wish we were as naturally nimble as these two, even if only in our youth. Meaning that, to take it a step further, if all (or most) humans could/would actually make love as effortlessly, as poetically, as romantically and as true physical and mental equals... then, potentially, what a ( ? ) world we may live in.
But, we can't. And the dance is only a metaphor for love, amongst many other wonderful themes.