I can't claim to know anything about your own personal life but I would say one thing - whats the worst that could happen?

I moved from the UK to Japan nearly two years ago (with g/f of 7 years). Sometimes being away form home sucks, as does the frequent feeling of isolation and knowledge that if the work life sucks you have to leave the country. Sometimes its amazing - I love the country (and my work) and the people I have met. My overriding feeling is that even though I really miss a lot of my UK life, (including the company I worked for on the odd occasion) I am glad I took the leap, for no other reason than I got to experience this.

YMMV