Should I charge my Girlfriend rent?

[Daniel Lynch]

So in the next few months I plan to buy my first duplex! I plan to house hack; rent out one side and live In the other. While running the numbers a thought crossed my mind about my girlfriend paying rent. Here’s the thing. She isn’t too interested in real estate and won’t be helping with the down payment or any renovations. Anyone else ran into this sensitive subject. Essentially if I made her pay “something” it could help with cash flow but morally it seems fishy. Any suggestions?