Girls, What is an age gap that works?

Since a few weeks a younger woman, early twenties, and I have been feeling attracted to each other quite strongly. Although there is an age gap of 21 years, we are drawn to each other. She is a co-worker and we both feel some hesitation because of that age gap but whenever we are in the same room there are vibes and other people are starting to notice. Any takes on this situation?

Girls, What is an age gap that works?
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