What is a man’s thought process?

So I started talking to this guy a week ago and today I we were talking and giving everything was good and then I responded to texts he had sent me asking him something. Then after i said I’d text him when I was done with his meeting because we were texting back and fourth. But when I sent this text he didn’t open the message and only opened it hours later and didn’t respond to it. Next thing he posted on his Snapchat. Was I suppose to send him a text saying I was done? It kind of feels desperate for me to do that because he never responded to my previous texts of saying we’d speak later
What is a man’s thought process?
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