Now that's one place a lot of people will debate with you. I've been told by numerous people that, contrary to popular belief, not paying for things on a date is a good thing to do. I can't explain the logic or testify to whether it actually works, as I've never tried it, but like I said, I heard it from more than just a handful of people.
It all depends on the girl, some girls get annoyed when guys open doors for them and pay for stuff and things like that, I'm lucky enough to have one that doesn't mind me being a gentleman, because I am one.