1. They undermine your faith in your grasp of reality.
2. Their actions don’t match their words.
3. They are experts at doling out guilt.
4. They claim the role of the victim.
5. They are too much, too soon.
6. They are an emotional black hole.
7. They eagerly agree to help—and maybe even volunteer—then act like a martyr.
8. They always one-up you.
9. They know all your buttons and don’t hesitate to push them.