Blood Types Are a Big Deal
If you’re on a date with a Korean person, be prepared for them to ask you what your blood type is. It might seem strange to us, but it’s an important aspect of dating culture in Korea, and there is a certain sense to it when you think about it.
Who better to ask for a blood transfusion than from your own spouse? Although not all Koreans follow completely, it’s still a fairly common practice to marry someone who has a similar — if not the same — blood type.