Why do narcissists seem to vanish after a relationship, and what does it mean for the people they've left behind?

What's the psychology behind needing to believe in karmic lessons or spiritual reasons for relationship breakups?
Why do people often hide behind politeness, and how can you tell if someone's genuinely trying to help or just being political?
What's the psychology behind needing to believe in karmic lessons or spiritual reasons for relationship breakups?
Do older men communicate their desires more honestly than younger men?