Is flirting with coworkers… bad?

First real job here, just started… my coworker is exactly my type, and I haven’t acted on it of course but I’m curious what the more experienced opinion is out there.

Also… is it a bad idea to follow him (and other coworkers!) on instagram? I seem to have gotten lucky with my workplace and everyone’s nice!
Is flirting with coworkers… bad?
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