Im so sad today was my last regular day of work and my crush didn't care?

he's 40 and we have been coworkers for 2 years and i didn't tell much of anyone im kinda leaving (i will be here like once in a blue moon so its not technically leaving LOL). So he probably doesn't know. But this is just a reminder he never cared about me right? He asked out another girl who rejected him but all along i was in love at first sight with him... But he never wanted me.
Im so sad today was my last regular day of work and my crush didn't care?
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