A person who has no loyalty to a friend or in most cases a bestfriend. This person knows what they are doing wrong but still keep doing it. They generally are insecure and are honestly fucked also known as snakes. Get this person out of your life because they generally go for other friends,
exes basically anyone she can replace you with herself. This person is
fake as fuck for example will put love quotes on social media but wont be about anyone or they might gossip about u to their new friends.
Bottom line delete them out of your life