After 10 days at a summer course, meeting amazing people and

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After 10 days at a summer course, meeting amazing people and having an amazing time, it's over. How do I live now?

I'm 24, finishing my masters. Traveled through most of the world and this was one of my few solo trips.
I took a robotics summer course and met people from each and every European country.
Had the most fun time and made loads of friends.

There's one girl though, who I instantly connected with. We slept together several times, mostly just to be in each other's company. We grew very fond of each other and spent one extra day together after the course.
This is as close to love as it get's, the hearth ache of being over 2000km away from her is unbearable.

How can I get back to the daily life? To the mundane job and boring college lectures?
Knowing she's out there and feels the same for me, knowing if I even want this to work I'll have to find a way to make enough money to move there or live somewhere abroad?
I'm completely confused and just feel like shit right now.