Most do the most horrendous of things, make up lies, are disloyal, speak of private things they promised not to because they can't hold to their own words or actually keep their own oaths, and lack true integrity and cannot even apologize properly let alone mean it.
Red Flag #17. You find yourself explaining the basic elements of human respect to a full-grown man/woman. Normal people understand the fundamental concepts of honesty and kindness. No adult should need to be told how they are making other people feel.