There have been a number of Things in my nearly 40-year marriage. The biggest, most glaring THING is always about finances. My husband is an abusive control freak when it comes to me spending any money at all. I'm talking a single dollar. Seriously. In part I hate him for it. In part I recognize that his behavior is an aspect of his OC personality.
But then, I'm sure he could list Things about me, too.