<human>: My girlfriend and I are moving in together and we are trying to figure out how do we split paying for food. Rent, internet, utilities, ect we both agree are easy and should be split 50/50.  

With food though we have very different diets.  I eat very cheap, pasta or rice with chicken or pork and frozen veggies.  Also I only eat one VERY large meal at the end of the day.  I avoid snacks because I know I can't control myself will eat all the snack food I buy the same day I get it, also they are expensive. Also I eat a lot more food than she does but my grocery bill on my own is about $150 a month.

Her diet: she eats 3 meals a day, a toaster pastry type thing for breakfast, a salad and/or fruit for lunch, and our dinners our similar but hers are smaller.  The problem is she buys more expensive foods, fresh fruits and vegetables, salmon, beef (she's not a big fan of chicken), and lots of snack foods.  So her grocery bill on her own is $200-300.

I don't want us to get into fights about the grocery bill so we are trying to decide how to split the food bill.  We don't like the idea of us each buying our own food as if we were roommates and not a couple because we usually cook dinner together and eat together.  I would like to know how other couples do it, please let us hear your ideas.

Could you distill the essence of the text into 1-3 sentences?
<bot>: How do we split the grocery bill when I eat more food but spend less, and she eats less food but spends more?