So, why is he all nervous now?

So, when we first started talking , he was so flirty and flirted about sex and was super not caring about what he was saying. And, I didn’t penalize him for his jokes but , told him that I really need to get to know someone and actually date. So, now. We have our first date coming up and he’s acting all awkward and nervous and it’s making me feel awkward. What happened to all his self-confidence ,

So, why is he all nervous now?
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