<prompt> Human: Just closed and took possession of my very first house yay! I have a room mate that is willing to essentially split the mortgage and consider that rent for my house They were given a second bedroom and own non attached bath Im considering letting my girlfriend move in with me, which brings up my situation. Should I charge her rent so I can bring down my roomies portion? I dont mind paying what I am already obviously since the mortgage was cut in half Id have my Gf assist in utilities and other services since it would make the bill larger, but the mortgage wont. It will also enable her to use those additional fund to help me and her out in other ways. Thoughts?EDIT: Getting some good advice from everyone. New information on what it really is to be a home owner. As requested, here is my home!  <response>: Charge both of them slightly less than 13 of the going rate for renting a similar sized house in your area.Dont base what you charge in rent on what you pay for your mortgage. 