What does it mean when a guy says "hey stranger" to you?

clarinet20
so there is this guy I know and I saw him one sunday and the next week, I saw him and he said hi and gave me kind of a buddy hug and while he did so he said hey stranger even though it hasn't been too long since I saw him last. does that mean something? someone I know said that it meant something, but I question his answer.Thanks
Updates
+1 y
i should also mention that this guy only seems to give me buddy hugs and only when none of our friends are paying attention or around. he doesn't do this otherwise.
Updates
+1 y
i also should have mentioned that the way he said it was almost like he missed me or somewhat in a sad kind of voice.
What does it mean when a guy says "hey stranger" to you?
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