How Can You Tell If Someone Is Shy or Isn't Interested?

Anonymous
Heya, gents! Happy New Year! :)

So... I have a question regarding this new man I work with, who technically has more authority than I do, as I am a counseling therapist and he is one of the consulting doctors on the floor we both work on. He just started about two weeks ago. Most of my coworkers are questioning whether or not he's shy or may have a lack of social skills because he doesn't really talk very much, and comes off as kind of awkward at times.

I, myself, am a slightly shy, quirky redhead, who tends to compensate for nervousness by acting a little silly or laughing with my coworkers. I think I am in relatively good shape (132 lbs, thin waist, slightly larger chest, notable curves in good places, big eyes), have my good points as a person and try to be as kind and compassionate as I can towards others. I have often been told I look younger than I am. He's a little chubby, has the emo hair swoop, glasses, but, I find all of those traits amazing. I really like him and try to convey this by complimenting his work, thanking him for what he does for us. From what I know, he isn't married and is around the same age I am.

I just am not sure how to go about showing interest or flirting with him as he is a doctor who we answer to. Personally, I don't know his feelings about dating coworkers or underlings, or if he even finds me attractive. Or if he is absolutely not interested at all...

Please help?
How Can You Tell If Someone Is Shy or Isn't Interested?
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