Let the Right One In (2008)

Continuity mistake: When Oskar shows his Rubik's Cube to Eli and explains how it works, one side is all white except one square, which differs from being red vs. blue between shots.

Eli: Oskar... Do you like me?
Oskar: Yeah, a lot.
Eli: If I wasn't a girl... would you like me anyway?
Oskar: I suppose so.

Trivia: At the end of the movie when Oskar is traveling on the train with Eli inside the trunk, and they are tapping Morse Code on the trunk's lid, they are spelling out "P-U-S-S," which means "small kiss" in Swedish.