Split The Airline Ticket

If a man asks a woman to come see them and they have to fly, who should pay for the plane ticket? Lady Jade wants to know what are the rules for something like this because one guy wanted a girl to pay for half the ticket even though he invited her! Is it the same as someone inviting you out for dinner? They are supposed to pay the bill right? Listen with DeDe in the Morning and let us know what you think.