<prompt> Human: I make 50kyear and my gf makes 30kyear.The total for rentutilities is roughly 850month - around 25 or so of my monthly income.Ever since she has moved in with me at the beginning of the year, she been buying us 50week worth of groceries, cooking, and keeping the place clean while I have continued to pay all of the bills.Id like to know how much if any I should be asking her to help with bills, or if you think what she has been contributing covers what her share should be based on how much shes making versus me.  <response>: fair is what you both agree to. did you ask her to move in with you? does she still have a place of her own? did she offer to pay part of rent? did you ask her to pay rent? you need to talk about this and make the decision together. 