As a 32 year old man, you should not be so pussy-whipped as to follow your
girlfriend to an unknown land, no matter how exciting, where your status
will be lower, where you will be the outsider. In short, you will
be playing on her territory. You're going to loose status. You'll loose
face. And nothing counts more than face and status in the world. A devoted
man? Forget about it. If you were intent on building a family with her,
you'd be looking out for yourself first, and taking her along for long
haul, wherever it is most advantageous for you.

In Japan, you'll have no specific advantage of having a Japanese
girlfriend, everyone has one. Read over the English teaching stories and
see if it fits your plan for the next five or ten years.

Then do a search on Google for the Japanese Wife 101 posting. Read that.