What does it mean when a guy winks at you?

AndreaBeaumont
so I've been talking to this lately who was really only an acquaintance. recently I came across him and after catching for a bit he tried to hug me which I found strange since I only hug very close friends of mine but I hugged him regardless. and then this other time I stopped by him to ask him how he was doing and we talked some when he was smiling and then winked at me. I had no idea how to react lol. what does he mean by that? was he just kidding around?
What does it mean when a guy winks at you?
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