So I went to a bar with some friends, and it was completely packed. We decided to ask some people at a table if we could share it with them so we could sit (I'm living in Germany, and I guess people do this all the time, not like in the US where I'm from). So they of course let us sit down. And we are there not more than 1 min when I make eye contact with this gorgeous girl at our table. I didn't think much of it, but in the course of the next 20 min, I notice we make a lot of eye contact. Well, after a while, this girl ask me and my friends if we are american because she heard us speaking english (I was the only american, my friends are italian) and after a while we are all talking. Then they (the group of people we share the table with) say they are going to go dancing, and if we want to go. I said yes, it sounds like fun, and try to convince my italian friends to come along. They didn't seem to keen on the idea, but said they would call me if they end up coming. So I leave them and go with this group of germans that includes this girl. And we end up talking all night almost as if the other people aren't there (I try to make some conversation with the others, because I don't want to be rude). So, after a while I get the impression she is definitely interested in me. Eventually we make it to the dance club, and we all end up dancing together for a few hours. Afterwards, its getting pretty late, and they say they are going home. I say that i should get home as well. So we get outside, and I am about to leave and she asks if I am on facebook, and I tell her I don't have a facebook (probably the only time in my life when I regretted not having one). She is surprised (who wouldn't be, I guess I'm the only person my age without one). So instead she says we should exchange numbers and emails. She calls my number so that I would have it stored, and then proceeds to take my phone and put her email in there so I can email her sometime. Now, normally I would just call in a few days or email her, or I would have walked her home that night and made a move, but the one problem is that she was just visiting a friend in town (so I couldn't walk her and her friend home to her friends place and expect to be invited in), and she really lives in another town 200km away. My question is now this, should I email her in a few days, tell her I had a great time, and hope we can see each other again sometime? Or should I just forget about it (she lives not so close, but I could imagine having to be in her area in not too long for work, as well as her coming back to my city for visiting friends)? I feel like calling is out of the question because what would I say "Do you wanna take the train for 200km and get some lunch/dinner/other date activity?". It seems like it was just a one night thing, and maybe fate decided otherwise for us. But at the same time, I feel like we had a real connection and why would she give me her number and email (I didn't ask for it) and tell me to email her if she wasn't serious? What should I do?