In an ideal relationship - both people should know how their combined income stands - £100 means nothing if you both know that you have paid off your mortgage, kids have left home and you both have tidy pension and little outgoings...but if you both know that money is tight and he/she still asks for £100...when they know there is a big bill that needs paying...then the fault is with the person asking the question...not the person refusing...
Sharing the financial status means that he or she knows when it is sensible to ask for spare cash...
