<prompt> Human: Planning on moving in with my girlfriend soon, and Im wondering what are some general guidelines as to make paying for living expenses fair for both? I know that not being responsible financially can be the downfall of a relationship. Im going to be making about 35k, and she will be making 65k. I have relatively no debt with savings, and she has a good bit of student debt. tldr: how do we fairly split the cost of living?  <response>: I think you should split 5050 up to the point the lower income person is ok spending. After that, if the higher income person wants something more expensive, they pay the extra. So if youd be ok spending up to 500month on rent but she wants to rent a place thats 1250month, you would split the first 1k equally and then shell pay an additional 250.I think this is the best idea since income based could feel like the lower income person is partly living off the higher income person, but pure 5050 isnt fair if the higher income person wants something outside the lower earners price range. And I also dont think just because someone makes more that its fair for them to pay for more of the costs. 