In my experience, American women are the ones who split date expenses most fairly

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However, I wasn't dating white women; they were people of color.
I guess it's because my income in Korea is relatively stable.
On the other hand, I dated a Russian woman once, and she never paid for anything.
She took it for granted that the man must pay for everything.
With Thai women, it's really case-by-case, but to put it simply:
If she truly likes me, she splits the bill strictly and fairly.
If she's just testing the waters, she doesn't pay much.
Still, unlike that Russian woman, they are tactful enough to pay about once every three times.
Anyway, if she was my official girlfriend, even Thai women split the bill strictly.
Conclusion: Russian women are trash.