HEY DO GUYS HAVE TO PAY ON A DATE?

It really depends on the girl. Some girls (like me) understand that guys aren't banks and actually have to work for money, so I pay for my own dates or if the guy pays for it all I offer to pay next time. Other girls, on the other hand, expect guys to pay. So unless you know the girl you ask out really well, I'd have money just in case she expects you to pay for the date.