Harry Potter and the Half-Blood Prince or not?

The task is simple. There are 6 quotes in this quiz. Some quotes are from Harry Potter and the Half-Blood Prince, some quotes are from other movies. Your job is to decide if the quote is from Harry Potter and the Half-Blood Prince or not:

We wouldn't last two days without her... Don't tell her I said that.

- Hey! She's only interested in you because she thinks you're the Chosen One.

- But I am the Chosen One... Sorry... kidding!

I solemnly swear that I am up to no good. Mischief managed. Nox.

- Why is it, when something happens, it is always you three?

- Believe me, Professor. I've been asking myself the same question for six years.

- Has it ever crossed your brilliant mind that I don't want to do this anymore?

- Whether it has or it hasn't is irrelevant; you gave me your word.

Facing this stuff in real life is not like school. In school, if you make a mistake you can just try again tomorrow. But out there, when you're a second away from being murdered or watching a friend die right before your eyes... you don't know what that's like.

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