I want to make my girlfriend pay half the bills if she wants to live here with me.
Can't you afford the bills? Why do you want her to pay half?
Because I'm a nice guy and she should be thankful I even offer to share my house.
That's only fair. You shouldn't be the only one to have all the financial burden on you.
I'm going to respect her a lot more for doing this for me.
You're making a perfectly reasonable request. She'll probably feel better about herself too for pitching in.