What does it mean when a guy says hello stranger?

[dream733]

This person always says to me hello stranger and smiles every time he walks past me and to be honest we walk past each other quite a lot.

[windknowsmyname]

You gotta be shitting me. You're not serious. Oh god you are... just saying hi. What else... expect him to ask you out? Saying things with no answer is boring.
But if we seen each other before, and i still call you a stranger. Then i want a reaction thats better than a hi and a bye. I want " im not a stranger." Or something. Not a boring hi.

[Tobby90]

Hello again my name is ***** now we are not strangers anymore. "Smile"

Now you decide what you want 2 do a flirt?

[ryana92]

It's his attempt at flirting, he's showing you that you guys don't talk as much as he would like

[PanzerVII]

He wants to know you more.