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I insist on paying when I am sure I never want to go out with a guy again. It makes me feel less obligated to accept another date.
To the original poster - keep your first meetup cheap, short, and simple... I am not even sure you can call it a date, since you haven't even met this person before, and so don't even know you will like each other. Chemistry can't be determined through a few lines in a message box.