To be succinct and private.. My incubator worked me for weeks to build rapport and trust with me in my younger days, to get me to tell her a something that she would ultimately, and immediately use and weaponize against me and others.
This wasnt the first time I tried to have a relationship with her, but it did finally open my eyes and become the last. In the many many decades since, I've not so much as acknowledge her existence when crossing paths.
Does it count if it's the parent of my kid? When our daughter was around 1yo my ex-wife got mad at her for being too selfish. I found her pouting not wanting anything to do with our 1yo because she was "not nice to her". That really opened my eyes to her personality.