Does this guy hate me now?

well he is a coworker but now he is completely ignoring me at work not even saying hi or acknowledging me at all, yes we did have a talk so called well I said we are not friends no more bc I was mad at him so next day and the day after he wouldn’t talk or even say hi how usually he would, I have no reason to apologize to him so I’m not doing that but why would a guy completely go from goofy etc to this over should I just let it go

Does this guy hate me now?
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