I'm wondering if there's a term for when a person has an enemy, (for lack of better word) someone who has done this person wrong, for example: slept with this person's spouse, robbed this person, spread serious lies, etc.
Obviously something bad enough that it would be hurtful to know that your boyfriend, girlfriend, close sibling, etc. are either still friends with or have befriended said enemy.
Hopefully this question makes sense I just joined and it's my first question. I also don't understand the tag portion. Not sure what word to put in there.