What does it mean when a guy does say hi, then ignores you, than starts smiling at you etc?

Lumikko
There's this guy that lives in the neighborhood I usually met from time to time either on the street or at the grocery store. We've been crossing each other path for a quite a while now (like a year or so). Sometime last year at the grocery story we spoke a little bit, was very nice, offered to help me to pick a bottle of coke from a too-high-for-me shelf.etc. Then he started sort of ignoring me (but casting glances at me sideways when he thought I wasn’t looking), and acting quite nervous when we ended up in the store at the same time. After then he started staring at me , when biking and getting sight of me He would slow down just to do that. Or pass by biking as close as possible where I was walking/ standing etc. Time passed by and all of sudden, he started smiling at me (In the past year I never saw him saw smile or say hello to anybody) Once I did smile back…He started saying hello and smiling on regular basis and (the first time he actually said Hi he also blushed a lot). Last time , I moved out of the way to let him pass (he was biking) he told me nicely not to worry about it (and blushed too) and he went by casting me a last glance as he was checking my reaction (?). (by the way my reaction was to smile :p) Soo..after that I met him two more times here we did smile and nod at each other. But oh man this guy confuses me, what he's trying to tell me? Feel free to express your opinion.

So far my instict tells me to wait until he does "something more" but...Jeez I'm puzzled!
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and yeah the guy lately seems to "light up" every time he gets sight of me.
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Okey things have started to get weird now!

So, I was just passing by when I met him, face to face, for once. He noticed me, then looked down and then just while I was walking close to him, shoulder against shoulder (we were on the sidewalk) I started singhing ...(out of the blue) and the line was "only you make me feel this way" , why do I have an hunch that it was a message for me? xD

But seriously this was..well sort of magic yes but also out of the blue xD

what do ya think? =)
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silly me, I forgot the last piece of the update. this is sounding some sort of fiction more and more.

Anyway...all of this (post above) was happening 3 weeks ago. So I didn't catch sight of him for 3 weeks more or less. I met him again last week end - by chance , always by chance here - and he was totally drunk. And the moment I got sight of me standing there..ashamed too. His friend was trying to get him to his house (I guess) but he wouldn't go, he tried to walk to me but he had to stop
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and his friend has to support him. he started looking at his own shoes, standing there in the middle of the road, facing me and he tried to speak...but couldn't muster the words. I stayed there as long as I stood there. his friend had to tug him away and the moment I did I just walked away, passing by. I felt so sorry after this scene, it was somehow really painful , plus can't shake the feeling that something happened, I don't kwno what though.:S
What does it mean when a guy does say hi, then ignores you, than starts smiling at you etc?
2 Opinion