How to get him to make the first move?

There is this guy who i think likes me, he is always staring at me, walking next to me and accidentally touching me. He also sometimes smiles at me or raise his eyebrows, but we dont really talk. I can't talk to him because i get too nervous, maybe he doesn't like me or maybe he is nervous too. How to get him to make the first move?

How to get him to make the first move?
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