Don't think too much about culture stuff. You are in a relationship. It only involves two individuals. There are two issues you may concern. One is why he suddenly realized that he has to be with a Chinese woman. You know there are 0.5B Chinese woman there :). Why you are the special one for him. Second is his 8-year relationship. You may want to know why it did not work out. This is a little bit sensitive. He may not want to talk about it in front of you. But at least you need to figure out if he has problem to make a longterm commitment like marriage unless marriage is not in your expectation package.
I think he is a very nice guy but you have to make sure that you know what he wants from this relationship. As babyface said, gave him some time and be yourself :).
I think he is a very nice guy but you have to make sure that you know what he wants from this relationship. As babyface said, gave him some time and be yourself :).