Why did my crush ask me if I'm a virgin?

We were talking the other day and she flat out asked me if I'm a virgin. She didn't do it in a mean way, like she wasn't trying to insult me, but she did just that. She had a look on her face like she honestly wasn't sure about the answer. That's a very hurtful thing to a guy, because it's like the girl he wants to impress telling him she sees him as a little boy. Do girls realize this, and why would she ask this? I'm not a virgin, by the way, and I've dated girls consistently since I was 17.
Why did my crush ask me if I'm a virgin?
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