Guys, he seems nervous around me; is he shy? Is he flirting? Or am I clueless?

I'm clueless and confused. I met a guy earlier this year. He talks to people but from my observations he doesn't talk to girls unless they are married to his friends or old enough to be his mom.

He won't do anything other than acknowledge me or say hi briefly. I have to go up to him. Sometimes he won't say hi or even look at me. Other times I catch him looking at me from the back of the room etc...

He seems nervous around me. Fidgety, stumbling over words and other times he talks too fast and add unnecessary details...

Sometimes he will touch me on my back, arm or shoulder very lightly. Is that flirting for him?

He seems to talk lower to me and I know I have his attention. He does face his whole body toward me. Once when talking we locked eyes deeply for like 10 seconds of silence. That threw me.

Also he said some things that made me think he isn't interested. He said he doesn't like to talk on the phone. Which is a blow off right? But at the same time he did the touchy thing and said he enjoyed talking to me.

I'm so confused. Is he just shy? Doesn't know what to do with me? Not interested? Men... Any thoughts? Ideas? Suggestions?

I'd appreciate it. Please be nice. I just don't know what to do right now.
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Any other ideas?
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Update...
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Thanks. I haven't seen him in a bit. Giving him some space and time to figure out what he wants.
Guys, he seems nervous around me; is he shy? Is he flirting? Or am I clueless?
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