Boundaries don't really have anything to do with expenses, they are in regards to personal welfare. If you're having trouble paying expenses then just say "W, I can no longer meet our monthly expenses, are you in a position to contribute? If not then we will have to cancel Netflix (or whatever)."
This is exactly what I was going for. Thanks. You are 100% correct I don't understand boundaries, that's why I'm here. One day at a time.
