"I have a boyfriend."

What she's actually testing

Whether your behavior was covertly transactional all along. If you immediately fold or pivot to justification, you confirm that your approach had a hidden agenda — which she already suspected. The test isn't whether you'll back off. It's whether your frame collapses when the romantic exit is closed.

Why it works on most men

It's socially bulletproof. Any pushback looks disrespectful. Any retreat looks defeated. Most men do one or the other — they pivot awkwardly ('Oh, I wasn't trying to...') or walk away with body language that betrays exactly what they were after. Both confirm the hypothesis: he was categorizing me as a romantic target.

The response framework

The obvious: 'Cool.' Continue the conversation as if she said any other neutral fact. The disruptive: ask about the boyfriend the way you'd ask about any other detail in her life — casually, with genuine curiosity. 'How long have you been together?' Not as jealousy reconnaissance. As the question you'd ask anyone who mentioned something about their life. The decategorization becomes concrete in that moment: a man who was in competition would never ask this way. A man who was just talking to a person would. She has to recalibrate — because you just made it impossible to categorize you as an applicant.