When you said yes to her commit morally, physically, ethically and financially. Decide that upto Rs. 1000, (with a cap of Rs. 3000 a month?) you will not fight, and anything above that you will take a joint decision. Saves blushes later on
http://www.subramoney.com/2011/08/managing-money-jointly-after-marriage/
http://www.subramoney.com/2011/08/managing-money-jointly-after-marriage/