Do girls take a guy being quiet around them as rejection if they like that guy?

I can’t really tell if this girl likes me. Also I’m horrible with telling if a girl likes me lol but I’m trying to politely say no without saying no if that makes sense. I like her but I’ve learned that not all work relationships go well. My last one ruined work completely. But she seems really really nice so I don’t want to be a complete jerk and say no at work in front of everyone. I’m not even mean like that like that’s a bully type of mean. But what should I do?
Do girls take a guy being quiet around them as rejection if they like that guy?
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