According to one widely-held view on couple relationships, how you argue is far more important than what you happen to be arguing about. Sex, careers, communication, toothpaste cap? No matter. The key to a good relationship is HOW you approach and discuss these issues, more so than anything special or difficult about the issue itself. There is a lot to recommend this view: couples benefit from following good ground rules for disagreeing, for example, and the emotional tone that couples take when discussing their problems gives us real information about where their relationship is headed.