https://www.thecut.com/2020/02/ask-polly-i-cant-get-over-my-married-lover.html
... Heather Havrilesky answers a letter from a reader who had a long-term but extremely dysfunctional affair with a married man she worked with.

https://medium.com/heart-affairs/my-heartfelt-advice-to-any-woman-having-an-affair-with-a-married-man-38b80a78a953
If you are indeed in love with a married man I know how you suffer ... and the person who is having the affair and betraying their spouse is not ...

https://dating.lovetoknow.com/Love_Affair_with_a_Married_Man
The married man is putting his marriage at risk having an affair with you, and you risk the same if you are also married. You may not care about being caught, but ...