Harry Potter and the Half-Blood Prince2009

[Hermione has run off from a Quidditch celebration party after seeing Ron kiss Lavender Brown. Harry finds her in a classroom with some birds flying around her.]

Hermione:
(Tearfully) Charms spell. I'm just practicing.

Harry:
Well, they're really good. (sits down)

Hermione:
How does it feel, Harry? When you see Dean with Ginny? I know. I see the way you look at her. You're my best friend.

[Ron and Lavender come running in, laughing. Harry gives them a dirty look.]

Lavender:
Oops! I think this room's taken! (runs off)

Ron:
What's with the birds?

[Hermione stands up angrily.]

Hermione:
Oppugno.

[Ron runs off and the birds chase him, crashing into the door. Ron leaves. Hermione sits down and starts to cry into Harry's shoulder.]

Harry:
It feels like this.