Do guys really get louder around the girl they like?

I was talking to the friend of another guy, and a few meters away from us, he was laughing really loud and exaggerated. If this is attention seeking, he's barking up the wrong bush, because I don't respond to that with anything but seething hate. lol. So.. is it really attention seeking? If you're guilty of this, what drives you to do it?
Do guys really get louder around the girl they like?
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