Me (19F) got blocked by my dream guy (19M)

I'm probably going to explain this very poorly since it's late and I'm really tired but I just need some advice, Basically, I met this guy on Discord which already sounds bad but we lived close so I didn't really mind. We clicked immediately and were very close. He's everything I could've ever wanted, he was so reassuring and kind, thoughtful, romantic, and wanted everything I wanted in a relationship. But a couple of days ago he blocked me on everything out of the blue, which was so weird since I think we were fine, he told me personal things and even offered to give me stuff like his password to his acc and stuff (I refused the offer since I felt a bit weird having them). I have no clue why he blocked me- the last messages were normal and heartfelt it was just so weird he blocked me.

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I still had his Instagram and Snapchat, he didn't block me on those since I didn't follow him on there and he didn't know my acc on said apps. I wanted to reach out and try to figure out what happened incase there was a misunderstanding or something but he hasn't responded nor looked at my messaged

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I really need advice on how to get over this and or how to reach out or reasons why he most likely blocked me. This is the first time I've ever liked somebody and I'm not feeling too good about the situation tbh. Idk am I being stupid and this is just a common thing or something?