I think it's traditional, old fashioned maybe a better term, for the guy to pay for the first few dates, but once you get engaged it should be understood that you will be splitting everything 50/50 =P.
Situation stinks, but at least you figured her out after 3 months and not 3 years.
Weird though, here in the states illegals typically pay you to marry them for citizenship, she's got some nerve trying to gold-dig AND get citizenship =P
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?It's a sad thing not to have friends, but it is even sadder not to have enemies.? - El Che