I personally know a few couples where either the man or the woman is foreign and I noticed quite a lot of differences in the kind of relationship they have.
Please note that the following is based on my personal experience and that not everybody out there is like that.
Most foreign men on the other hand, have no issues approaching a Japanese woman in English – or even in broken Japanese.
A lot of Japanese women want a guy that tells them several times a day how much he loves them.I also experienced that they’re unable to do anything on their own.When I ask them about how they got their cellphone or credit card they just answer they don’t know because their wife did it for them.For some guys it really gets to their heads and they start bragging about it like crazy as part of the superstar syndrome.The complete opposite is the case for (Western) foreign women in Japan.Things that they fear a foreign woman would not agree to do (e.g.stay home, take care of the kids, always pour new alcohol into his empty glass etc.).Consequently they don’t see the need to study Japanese, because their wives will take care of it all.One big problem seems to be the fact that in Japan the man earns the money, but the woman takes care of it!Because of all that I’ve seen couples who got divorced, even when there were kids involved.I noticed that those kind of relationships seem to work out better if they live in his home country and not in Japan.