‘I cook and clean’: I live with my boyfriend. We’re 51. I pay for all utilities and groceries. Now he wants me to pay half his mortgage.

Dear Quentin,

I have been in a relationship with this man for five years. I moved into his home a year ago. The plan was for me to pay all the utilities, dog expenses, and groceries. I cook and clean, and take care of things around the house and now he is asking me to pay half his mortgage. He does not want to marry me — nor put me on the deed to his home. 

I…