Is it wrong that since my cousin always sees me and never says hi or talks to me I didn't say hi or talk to him while he's working next to me?

My other cousin pointed that out the other day that it was weird that he saw me but didn't say hi so after that I just decided not to acknowledge him either. I always waved at him when i started working here and he used to wave back but we don't even talk or anything. I'm not sure but I think a while back when I first started here I thino he told my cousin not to talk to me or something. Nothing has ever happend between us we're both quiet people and I don't cause family drama
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Yeah i think the cousin that this question is about told my other cousin not to talk to me i dont know why but this was a few months ago
Is it wrong that since my cousin always sees me and never says hi or talks to me I didn't say hi or talk to him while he's working next to me?
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