Why does my crush pat my head?

so I like this guy and I feel like he likes me too. but he's different like any guy I've ever liked. first off: he's shy. I've never liked a shy person before and the good thing is he's opened up with me more and not so shy now. second: he touches me a lot like giving hugs and he plays with my hair, stuff like that. but the most confusing thing he does is pat my head!! what does a pat on the head mean? doesn't that mean he sees you as a friend?
Why does my crush pat my head?
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