A flash of anger is a bad sign, right?

[The One and Only...]

You guys remember that girl I was telling you about? Well, I thought we had something going on... I think she had noticed me looking at her a few times, and I had caught her doing the same thing...

After today, though, I'm not so sure.

She walked right by me and gave me something of a dirty, angry look.

The thing is, I don't know what could have made her angry at me... I didn't say anything to or about her...

Did I just misinterpret it, or what?