Would you think its weird and avoid me?

Met this guy who works at a coffee shop, we have been chatting for 3 weeks, and he is always smiling at me, coming up to say its good to see me, how am I, and being super friebnly. With all this eye contact i felt a spark. If i ask him to hang out, and he isn't into me and says no, do you think he will be weirded out and try to avoid me, making my usual coffee place awkard for the both of us?
Would you think its weird and avoid me?
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