my husband's niece is good friends with my ex's wife...
Should I be bothered (really irritated) that my niece, my husband's brother's daughter, is really good friends with my ex whom I was in a 7yr relationship with's wife. I feel jealous I guess that my niece has lived with me... And now she's friends with her.... Her husband hurt me emotionally through the entire course of our relationship. So I'm jilted.... Should I be upset? Isn't it an unspoken rule for loved ones to blacklist family's ex's and anyone associated with the ex?