How to split bills with a girlfriend if you own 100% equity

[Alex Johnston]

I need some advice from any and all who have an opinion on the matter. Even better if you've been through the same situation. Im considering moving to Texas from Washington and purchasing my first duplex and house hacking. I graduate college in near future and I'm a veteran, so I plan to use my VA loan to finance the purchase. I have a long-time girlfriend that I wish to move with and live with. I'm perfectly happy with my relationship but I'm absolutely NOT considering marriage at this time, or anytime within the next 5 years. I want this property to be 100% my own. How would you suggest fairly splitting the bills with a partner who is also technically a roommate? We both make about the same salary annually. 50/50 everything? Should I let her pay some variation of HOA, property tax, mortgage, insurance, utilities? What's fair and reasonable, if my goal is retaining 100% equity and ownership of this first property?

[Account Closed]

@Alex Johnston

This is not going to end well.