WHY DO PEOPLE WANNA LISTEN TO MY HEARTBEAT?

There is this girl who seems to be obsessed with my heartbeat, she keeps asking if I can post a video of it like everyday and I did post one just cuz I was bored and went on this trend on tick tock lol and now she wants me to post it every day or asks me if I have any more videos and she looks at my profile on tick tock and she told me that she counts how many beats my heart makes in the video which is kinda creepy and I’m not obsessed with the heart, I just did one video just for fun, what should I do/say to her?
WHY DO PEOPLE WANNA LISTEN TO MY HEARTBEAT?
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