Is it sketchy my coworker who seemed lately to be getting closer to me (we have been being more interactive) didn’t say hi to me today?

He passed me multiple times and to

his credit I wasn’t facing him any of those times however he walked close by me. Never once said anything to me. Usually he says hi so that’s why I find it off.

Is it sketchy my coworker who seemed lately to be getting closer to me (we have been being more interactive) didn’t say hi to me today?
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