A guy from University sliding into dms?

I don't know this person in real life. He apparently knows me. He's from a nearby department which I pass by everyday multiple times to get to my classes. I found this by asking a mutual about his identity. He's the mutual's school acquaintance. When I asked the guy who he is, he said I'm no one - let's text if you want. I blocked him, but why does this happen?
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+1 y
I've gotten different dms like do you know me, have you seen me. Like no wtf. Why do these dudes creep on girls who they've never spoken to irl and then dm them😑
A guy from University sliding into dms?
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