I titled this as "spouse," because money and marriage are far different than when you are living together or just dating. Money fast becomes an issue after "I do." It's a pain having to share money after being independent, but people make the switch very fast, and without guidance.
Churches have counseling before marriage, why shouldn't accountants? It's an untapped market. No one would believe when they're single how important the issue of money becomes. Also, in this economy, it may just be the number one topic in the majority of households.
Accountants! Have classes for before marriage. "Engaging Financials" is a good title for a class for those marrying each other. You should talk about how to share, what you agree to spend money on and not, and kids and money. Those are just samples of what you go through when getting married for the first or fourth time. It just makes "sense" to get advice from the experts.