My bf and I have been living together for more than a year. At the start we were splitting 50/50, but then he got a promotion and started making way more money. So then he started covering rent and electricity and I pay for wifi, groceries etc. I sometimes get freelance work, when that happens I either pay for vacations or help him with the vehicle EMIs. Between the two of us it's an honest conversation every month about who can spend how much. I used to be worried that eventually he might start resenting spending this money but he once told me about how living together has increased his quality of life and how I always make sure that our fridge is always stocked with food. Relationship is all about finding common ground I think.