I have always loved the image of the dance for marriage. Touchstone: A Journal of Mere Christianity has a section in the front called "Quodlibet" (it means "whatever"), snippets of ideas the editors have been mulling over. David Mills writes about marriage this time, and I love these two paragraphs:
"It's as if the couple have spent so long learning to dance that now they move so fast and so smoothly that you just see one thing (one flesh) moving. The husband has always led, and he's still leading, but he's better at it: He's leading his wife where she can and (mostly) wants to go, and she's following because she wants to.
"She trusts him and thinks that following him makes the dance better, and even when it doesn't (because he's not perfect), they keep dancing in a way that covers the mistake. If she hesitates or resists, he changes the dance, most of the time (because he's not perfect), because he knows she sees something he doesn't."