There is an art to slow dance actually. I once read about it and it was an interesting article.
Position your arms. Correct arm position is vital for starting to slow dance properly. For the traditional slow dance position, the man should put his right hand on his partner's left hip side or on his partner's mid to upper back, and his left hand should gently grasp his partner's right hand and hold it up at about shoulder-level of the taller partner so that both partners' arms are bent upward from the elbow. You should stand about a foot to half a foot (30 - 15 cm) away from your partner, depending on the level of intimacy you want to create.
I am not sure who measures the distance between two people? Do you automatically know hey you are too close or get a little closer? Interesting indeed. I never thought about it, but I guess I bring a ruler with the metric system on it for the next time.
We absolutely adore dancing wherever we go, because who wouldn't want to be close to the one that means everything to you? Exactly my thoughts!