My DS2 gf is 19 and has lived with us for about a year. My DS2 pays nothing as he does not think he should and refuses to but buys his own food. Gf currently pays £40 per month and buys her own food.Is it unreasonable to ask for more? I also have a DD who is 16 so pays nothing and a DS who is 22 and on minimal benefits due to ill health who pays nothing but cleans once a week and does gardening and other jobs to pay his way, he also buys his own food. DS2 and GF do hardly anything to help around the house and do not contribute to items such as toilet roll/shower gel/clothes washing soap etc