Elephant

This is the most amazing, moving scene in the film.

[Acadia enters the room]
Acadia: Hello.
John: [startled] Hi.
Acadia: What's wrong?
John: Nothing.
Acadia: You were crying.
John: [shrugs] Yeah.
Acadia: Is it something bad?
John: ...I don't know.
[Acadia kisses John on the cheek]

I don't understand the scene - Acadia is not John's girlfriend, as far as I can tell, she is just being kind - and boy, it brings tears to my eyes. I don't know...

John's a cool guy, I really want a yellow shirt like his.