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Darling, is something bothering you? You're really acting like...an asshole.
— Ginny ‧ Sixteen Candles

Behind the line May contain spoilers.
Our reading
An editorial interpretation.
Sweetly asking if something's wrong, then landing the punchline: the person is acting like a jerk. The pet name 'darling' and the caring question set up a blunt insult, and the hesitation before the word gives it comic timing.
Context reviewed