How to tease a guy (non-sexual) into liking you?

For example you just met a guy in Starbucks or something, and your really into him... what to do? how to give off the vibe that you are into him, in a playful way so that he doesn't think your a psycho. Maybe some ways to tease him about something which will get his attention?
How to tease a guy (non-sexual) into liking you?
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