I got stuck on the "my girlfriend has been acting weird lately" screen. it is the ending?
No, you need to get to the subway. Use the mouse to rotate a bit to see its entrance around the city.
Also navigate through that piece of paper with the arrow keys <- ->
If you navigate the document with the arrow keys you'll be able to close it, I've added a note in the controls to make that clearer but I'll definitely work on the UI for that - thanks for the comment!
