Why did he do this?

So i used to talk to this guy on telegram and i hadn't replied to him for like about two weeks because i was stuck with work. One day i couldn't see his instagram and i just assumed that he had deactivated it , i texted him back the next day and after a while of talking he went ahead and asked me for 'pictures' and i sent it to him only to realise he had actually blocked me on Instagram. I went ahead and blocked him on telegram
Why did he do this?
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