My "Significant Other" and I both work. We share the bills and expenses. She does what she wants with her "extra" money and so do I. We help each other out if need be but other then that she doesn't care what I spend on things nor do I give her a hard time on what she does with her money. If she asks I tell her, no secrets. Works well for us and keeps discussions civil. I will admit she rasied an eyebrow when she went with me to the hobby shop one day and saw what 6 digital servo's cost for a 30% plane!