Too shy to talk to him

Hi guys, it's me again. So here's the situation. I like this guy lets call him x. Me and x sat next to each other one year in year school(it was just for a day though). We talked and he seemed really shy but sweet. Everyone in the class thought something was going on but all we were doing was talking. So anyway I'm still in the school but he's done. I see him once in a while(this means I see him maybe every couple of months) when he comes to the school. The thing is I don't know what to do. Recently I saw him walking down the road and when I turned around he was looking at me. What should I do? Don't tell me to talk to him because I can't. I'm waaay to shy.

Then get his number and txt or do it online get his myspace or w/e and talk to him there its easier to talk to people you know in person on the net if your shy trust me I know so try doing that hope it helps =)

Do you know where he hangs out? Do you have any friends in common (even friends of friends?) Hmm last resort, bump into him on purpose by accident?

pretty much what the two people above me said,
get his number myspace or whatever,
or hang out with one of his friends or something..