If a guy stops by your house just to say hi when he couldnt hang out for the whole night is that his way of showing he is pretty interested?

I had asked him to hang out last night after work but he had plans already. He surprised me by stopping at my place to say hi and chat for a bit. Does that mean he felt bad not being able to hang out? He said he just wanted to see me even if it was just for a bit. We have been on 4 dates so far so it is pretty early on.
If a guy stops by your house just to say hi when he couldnt hang out for the whole night is that his way of showing he is pretty interested?
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