If you are aware of the hot topic areas where maybe marriages don't go so well, you can then know how to work, prevent, and cooperate in those areas.
Seriously, that is just a recipe for disaster. I am not saying to combine bank accounts if you don't want to. But you need to be on the same page as a couple together when it comes to money.
We have a 5 and 10-year financial plan. In fact, as I type this I want to make them both better. We don't always agree about everything, but we always compromise.