How should I deal with a co-worker who likes me a lot but she has a boyfriend?

Since a few weeks a female co-worker who is 14 years younger has been flirting with me. She tries to be in my presence a lot, keeps on staring at me for a long time, smiles at me, touches me by accident, listens to me attentively, laughs with my jokes, we have even danced at a party and really connected. I really like her, we get along really well, but she has a boyfriend. I knew this but still there's fire between us.

Sometimes she tries to keep her distance, probably because of feeling guilty towards her boyfriend. Still, our gazes say enough. I like her, I really do, but I also respect her relationship and then keep my distance as well. Still I feel this situation will keep on affecting us.

Should I forget about her and ignore her, even when she tries to get closer to me? Should I confront her? Normally, I know what to do, but now, I doubt, because I want to see what could be happening.

Advice will be much appreciated!

How should I deal with a co-worker who likes me a lot but she has a boyfriend?
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