How would you react if you found out your partner or someone close for you, that seemed nice, was truly evil?

Bonds are complex. Perhaps if one looks at it like objectively? Are those bonds becoming more like shackels? Is it limiting oneself more than one wish? Is there honestly no goodness any more left? Has it gotten to be a nasty game of giving cover to evil? Personally, I won't stand to be bonded by the serial rapist or murderer. I knew once a woman who defended an uncle of hers who had been abusing her sexually since she was a teenager. I tried to argue to her that it was wrong, but she couldn't really see the evil because it was always cloaked in niceties