Honestly, I really like the guy to pay....maybe I'm super old-fashioned, but unless you guys are in a relationship, I think that the guy should pay. I always feel like it's polite to offer to pay (on my part), but I don't really want him to say yes to that. It's just like holding open the door for a girl, opening the car door, etc. And just because a guy does those things does in no way mean that I think he "expects" something in return. I've only known two girls who don't like the guy to pay, and they say it makes them feel like they are on an uneven footing with the guy, but all the other girls I've talked to just think it's sweet! So pay (or let her pay if she's really adamant about it--sidenote: I SOOOO do not get girls like that)! And have an awesome time on your date tonight!
edited cuz I forgot to address the whole question