Jealousy is a powerful emotion that can make people act in strange and unexpected ways. Sometimes it shows up loud and clear, but other times it hides behind subtle behaviors that are harder to spot.

People who never post their personal lives online usually observe more than they post to keep their lives private.

Experiencing a friendship breakup is never fun, but you know what else feels equally awful? Ignoring toxic friends or missing red flags that signal you actually shouldn't be hanging out with someone.

“Man is not what he thinks he is; he is what he hides.” —André Malraux Corrine, a 34-year-old account executive, was in a secret year-long affair with her married boss, Daniel. She came to therapy ...