Guys, I met a guy on social media, it was all going well, he got controlling. he unfollowed me on social media and has now blocked. why act so weird?

I'm just trying to understand the extreme behaviour as I was nice to this person.

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+1 y
First he unfollowed me, so I unfollowed him as well, seeing as he wasn't interested anymore, then he blocked me. It's not like I was going to contact him again in any case, so why the extreme behaviour? It doesn't make sense.
Guys, I met a guy on social media, it was all going well, he got controlling. he unfollowed me on social media and has now blocked. why act so weird?
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