Beats me.
I have a few long-term relationships: Significant Other, Family, Friends.
Sometimes everything is wonderful, copacetic. Then again, sometimes things can go to hell in an instant. A blip, a wink of an eye, one false move or one hanging participle.
How about the Male/Female thing? The Yin/Yang Dichotomy?
I think of Jerry Seinfeld's advice about marrige: Always Agree. No matter what. Jerry is sort of Zen about it. Maybe a Zen Master.
How does it work at home? Here is an example from today's morning conversation in the kitchen (with coffee).
My Companion: Why did you do it?
Me: Your Wish is my Command.