<prompt> Human: I own a home. Mortgage is 1350, water 50, gas 50, elec 160, cable 80, Internet 50. Roughly 1750 per month in bills. Varies slightly but thats a good ballpark.Gf recently moved in with me and the plan was for her to pitch in 400-500 per month, which I think is very reasonable since I make more and own the home. Well recently her dad put the idea in her head that she shouldnt be paying my mortgage since her name isnt on it. I guess saying she should only be paying 100-200 for the actual electricity and water she uses? And essentially no sort of rent at all. Not sure his thought process.My question is, am I crazy thinking that doesnt make sense? I get that its my mortgage, but is paying 400-500 out of a total of 1750 really paying my mortgage.If we had split an apartment for say 700 a piece down the middle that would be different to him because that would be rent... But since my name is on the house he has her thinking shes just paying my mortgage.Ive never ran across a situation where someone just pays for the electricity and water they use and then otherwise lives for free, just looking for opinions on the situation.Thanks  <response>: The father is wrong, Id be worried about her agreeing with him as well. She should want to help you out imo. if she wont help pay ask her to look for an apartment. 