<prompt> Human: I will be moving in with my girlfriend temporarily for 1-2 months and we began talking about what the best options for splitting the grocery bill would be as that is her main expense. Im reaching out to anyone out there that splits bills with their SO for what works best for youEDIT: I should have clarified that I am asking what system works best for splitting 5050 on grocery expenses. Whether totaling at the end of the month, splitting by two cards at the store, 5050 money in a jar, ect  <response>: Its a temporary arrangement to LIVE WITH YOUR GF. No rent. Give her whatever she wants. Be generous, pay them all.First time living together, you sure dont want to establish the precedent that you are a cheap bastard whos going to argue with her about who pays for a bag of chips and a bottle of shampoo. 