<prompt> Human: My girlfriend and I are moving in together. Im recently out of a divorce and lost a lot of my assets. She makes around 115k, I make around 95k, and were trying to come up with a fair rent payment, per month. I own the home, and have a child that lives with me almost exclusively. I currently pay around 2200 a month in mortgage, and 150200 in utilitiesetc. Any feedback on how to figure her monthly payment would be much appreciated by both of us - we both want to figure this out, but were both uncomfortable with setting a monthly figure. Thanks!  <response>: IMO you should split your bills 5050 and not even attempt to find some sort of parity in percentage differences and premiums and other silly things.You should be happy you have a girlfriend that works, much less makes more than you. If she wants to spend extra of her money being generous to give you gifts or whatever with the money she earned on her own, good for you.Treating your girlfriend as an income source to balance your lifestyle choices is ridiculous. Girlfriends arent there to be manipulated into maxing out their worth.Youre setting your relationship on fire.Id recommend, that at the end just split common bills in half each monthbiweekly. Its way easier and there is no situation where eventually this wont come up and will cause a problem. Your relationship should not me a financial maximization problem to gain the greatest profit. 