Why did my boyfriend's heart beat so fast when we were hugging?

i recently just met my boyfriend for the very first time!!! we met through mutual friends online but never met because of school even though we were literally 5 min away from each other but about a week ago we met and went on our first date it was amazinggg and it was so fun i enjoyed it so much we both love each other very much and we both matched each other energy so well and were so comfortable around each other we talked a lot!!! but since we were always hugging each other i could hear his heart beating soooo fast and his hands were shaking is that a good thing or a bad thing?
Why did my boyfriend's heart beat so fast when we were hugging?
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