It seems that most of us get too attached to a WG at one time or another and learn a lesson first hand.
It seems like you reached well when she dropped her 'bomb' on you. It's exceedingly unlikely that you can build a relationship with a WG, and it would be best if you didn't try.
In fact, the closest thing you should aim for would be to be "fuck buddies". Brother Goose seems to have refined this into an art form, check out this thread (
http://forum.sex141.com/eforum/viewthread.php?tid=20591) and you'll see just the tip of the iceberg.
There's lots of ways to deal with the empty feeling that you have when you end ANY relationship, for punters like us it's usually best just to get out there and nail a bunch of WGs.
The only real kernel of wisdom I can offer here is that you should be keeping your relationships with WGs platonic, and investing emotionally in civilians.
Have you checked out this west coast website?
http://forum.myredbook.com/cgi-bin/dcforum2/dcboard.pl?az=list&forum=DCForumID201&conf=DCConfID3 There must be a similar website for the NY or the east coast in general. It seems to be fairly easy for Korean WGs to get into the US, and quite a few of them are in their mid-20s and highly rated.
Others may differ in their thinking, but for me, it's not exactly self-control that keeps us from falling in love with HGs, but more that we know that there are a dozen more arriving every week. It's simple economics: when a resource is in short supply, then it's valued more highly then when it's widely and inexpensively available. I've noticed that the relationships that I've formed while punting in HKG have been friendships with the other members of this forum, not with the girls. We share these girls, so it's hard to get too attached.
b.t.w. generally speaking nobody here will talk about their GFs or spouses; it goes against the grain of anonymity that encapsulates the forum.
-G