Just found this comm, and thought I would introduce myself. I'm a U.S. citizen just starting out in a relationship with a German citizen who's currently studying in the UK. We don't yet know if we'll reach the point where we want to live together permanently in one country (though I think we're very strongly leaning in that direction), but we've started doing research into what it would take to manage that, if we do.
Glad to see there's a community here on LJ on the issue. I took part in the March for America in DC yesterday, as part of a group with Immigration Equality (an LGBTQ-immigration-focused organization), and it was a pleasure to be able to talk about my concerns with other people who have partners abroad, for years or just starting out.