If you are a man, pay attention to this !!!
NEVER EVER ask a woman to pay for you on your first date !!!
That will be rude, embarassing, and disgrace your pride as a man ... Even if you said, " Oh, I was just joking, I'm sorry, I didn't mean it ... ", but it will be too late. She will definitely lose her interest on you, believe it !!! Even if you beg, it may be useless.
If you wanna be looked as a real gentleman, pay all your date's expenses, if you don't have money, borrow from your friend first, or sell something valuable that you have ( don't steal !! ) or whatever way you can do to get some money to pay for your date, make her feel that you really spoil her ( at least for your first, second, third, fourth, and the next dates that you think you can still afford to pay all the expenses :P ).
Believe me, if she is normal, not a thrifty girl, she will not let you pay continually ...