For the first 4 years that we lived together, I paid EVERYTHING except the property tax. The house is in his name only, and NJ does not recognize common law, so it was his responsibility. But I paid for every other thing... including all all furniture, kitchen cabinets, carpeting, lighting, household bills, food... everything.
Two years ago.. my income became lower and I had VeggieFrog's college. So, we split everything 50/50.
Recently, I became unemployeed... with the exception of low paying 25 hours a week at the vets and a couple of hundred a month from another job I do 3 days a month... so he pays the majority of stuff now and I fill in the gaps.