What does it mean when a guy put his arm around your waist?

Anonymous
So i was sitting with a guy friend and i put my arm around his neck and then he put his arm around my waist, so we were sitting like this:
What does it mean when a guy put his arm around your waist?

Expect he had his arm around my waist, also he was a little drunk, but does it mean that he likes me? Because he doesn't really touch me that often expect when we hug or then he's afraid to mess something up?

What does it mean when a guy put his arm around your waist?
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