Female coworker?

I like keeping things very professional in a work setting. I am definitely crushing over this female coworker. As a guy how can I tell if a female coworker is interested me? Are there body language to look for, or if she finds a way to come close to me, if she looks or don’t look at me when I’m talking to her, or laugh at funny or coney jokes. I just need someone opinion please.
Female coworker?
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