Am I wrong to distance myself from an attractive mentee while married?

This is my incognito account so ignore gender. I am a married man in my 40s and a woman at work, younger than me asked for mentorship. I have been providing it until I noticed that I was incredibly attracted to her. There is also something about her needing me that just does something for me. She is also very beautiful and I don't see a wedding ring, she mentioned wanting to have a family one day in the context of her future during a conversation. My wife and I are not in a great place and I found myself day dreaming about starting a family with this woman and the way she looks at me like I am the best thing just does something to me. I have been avoiding her as a consequence and refusing her requests to meet but she thinks she did something wrong. I now feel very guilty about this. How to do the right thing. No matter what I do it seems I hurt someone.

Am I wrong to distance myself from an attractive mentee while married?
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