What does "hot and bothered" mean?

We were playing 20 questions and my boyfriend asks me how I feel when I see him. I say "nervous which I get butterflies you?" He says "hot and bothered". It was his turn so He asked me what my favorite food was. So I asked him "Hot and bothered? O. o" he replied "Too much?" I said "Explain" he said "I get really sweaty and shy". I'm thinking that isn't the right definition. I feel like he meant something else... we've been dating for about 6 months now. I'm his first girlfriend
What does "hot and bothered" mean?
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