Did he like how I looked?

I met a guy for the first time in person yesterday. Before that we had connected through social media.

When we met he was waiting me outside the restaurant.
I walked towards him and said hi to him and he said hi back. Then he turned to walk towards the entrance of the restaurant ( I was walking behind him) but seconds after doing that he looked over his shoulder back at me with slight smile.
Did he like how I looked?
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