Collaboratively make a plan, then never talk about it

Hear me out: Ruminating constantly, distrust, and worry about finances is a romance killer. Get together for a big couple blocks of time to make your plan, set up all your accounts and pre-arranged deductions, schedule your periodic check ins, and agree on how much each has for play money with zero collective oversight. And then let the machine grind until your first scheduled check in. We do monthly.