Why did a new coworker (he’s leaving the job soon) vent about his ex and new prospect to me but he doesn’t even say bye to me?

I spent time giving him advice and listening to him venting and he doesn’t even say bye when we left at the same time.

guys are trash

definitely not listening to men whining about their girlfriend anymore

Why did a new coworker (he’s leaving the job soon) vent about his ex and new prospect to me but he doesn’t even say bye to me?
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