Does it bother a guy when a girl waves to him?

How does a guy feel when a girl whom he is not really friends with but kind of, waves and say hi to him?

would it freak him out or is it ok? Cause I think this guy is really cute and the other day he did a favor for me and even asked me my name and he told me his. But should I keep saying hi to him?
Does it bother a guy when a girl waves to him?
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