Uh-oh. Aria does NOT like what she witnesses in this scene: Ezra is interacting with an old flame.
Added:

Pretty Little Liars Season 2 Episode 10 Quotes

Hanna: If it needs a tent, it's a circus.
Ashley: Says the girl who woke up at 4 a.m. for the Royal Wedding.
Hanna: I had to pee.
Ashley: For three hours?

I'm officially terrified.

Aria