He spends on luxury and I save every month. Can this work after marriage?

Money habits rarely change after a wedding, and your December date is arriving fast. When one person sees luxury spending as a normal treat and the other tracks every rupee on an Excel sheet, you are looking at daily friction over rent, EMIs, and savings goals. This gap will not resolve itself through quiet compromise alone. You need to sit down before the wedding and look at actual numbers, not general philosophies. Ask him directly how you both will split household expenses, who pays the EMIs, and what percentage of income goes into savings each month. The uncomfortable part is that his answers might reveal a lifestyle you cannot sustain or anxiety you cannot live with. Pushing through this conversation is difficult and will cause short-term tension with both families who have already fixed the date, but finding out you are financially incompatible now is much better than discovering it when EMIs bounce. If his idea of managing money threatens your baseline financial security, you need to pause and decide if you can live with that permanent stress.