I currently pay $900 a month to live on my own but SO has said that I could live at his place for free. All he asked is that I put that $900 that I would be paying towards my school loans and savings.

Should I offer to give him money for rent and utilities though? I know he said I wouldn't have to pay anything but I'm not sure what the right thing to do is. I want to respect his authority and leadership but at the same time I don't want to take advantage of him. I figured the least I could do would be to cook and clean and other household duties to show my appreciation.

He makes four times the money that I do (if it matters).