<prompt> Human: Im moving in with my partner soon, and am looking for some advice on how to split expenses. Weve had some discussions about this, but Id like to gain some outsider perspective.Im looking for advice on how to share our expenses fairly, given our unique circumstances. My partner makes about twice as much as I do, and has children from a previous relationship. Expenses for the children are split between their two parents, who have similar incomes. Custody is 5050.So far our discussions have centered on the idea that I would pay rent to cover living expenses. My question is how much should that rent be, as a portion of mortgage payments, utilities, groceries, etc.Thanks!  <response>: Moved in with my boyfriend. He makes twice as much as me. He pays rent 1000. I pay utilities and buy groceries. We each pay our own debts. 