Patito

I think whoever asked the other person out should pay. I usually pay when my girlfriend and I go out, but mainly because she drives 3 hours to come see me, I want to make up for the gas and time she spent driving. If she's around for awhile, she'll usually buy me lunch or if we go out for dessert or rent a movie she'll pay for that. I'll pick up the more expensive bills, when we go to the theater or out for dinner or the like. If we go out with a bunch of people, then we usually pay our own bills.