Have I ruined it with this guy I really like? ?

So me and this guy started chatting two weeks ago and met up for a first date last week! He’s been initiating loads of chats and sending me photos of his family etc. two days ago his tone completely changed. He said he’s not looking for something serious (texting every day) right now. We’ve sort of arranged a second date he said he’d get back to me for either a Thursday or Friday. He’s looking at my stories but not responding at all, he’s had a busy week but not even a second to respond? Should I give up? Or wait? Maybe something has happened. Perhaps I was too intense which I get, i want to respect his wishes and not annoy him, I really like him.
Have I ruined it with this guy I really like? ?
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