Steve Rogers: I am sorry, Nat. I can't sign it.Natasha Romanoff: I know.Steve Rogers: Then why did you come here?Natasha Romanoff: Because I didn't want you to be alone.
You know what's about to happen. Do you really wanna punch your way out of this?
Sometimes I wanna punch you in your perfect teeth.
If we don't do this, it will be done to us.