Published October 13, 2025
4 min read

Why do people get jealous?

Short Answer

People get jealous due to fear of losing relationships, insecurity, low self-esteem, comparison with others, evolutionary protection of resources, and threats to important connections or status.

Detailed Explanation

Background

Jealousy is a powerful and often painful emotion that most people experience at some point. While jealousy can feel overwhelming and destructive, it serves important psychological functions related to protecting relationships and resources. Understanding why people get jealous helps us manage jealous feelings more effectively and respond more constructively when others are jealous. Understanding Why do people compare themselves to others? reveals how social comparison contributes to jealousy.

Research in psychology and evolutionary biology shows that jealousy evolved to protect important relationships and resources from threats. While jealousy can sometimes be excessive or harmful, it also signals what we value and helps us protect important connections. By understanding the functions of jealousy, we can develop healthier ways to handle it and maintain secure relationships. Understanding Why do people have low self-esteem? helps explain how insecurity contributes to jealousy, and Why do people seek validation? shows how the need for external confirmation can trigger jealous feelings.

Scientific Explanation

People get jealous for several psychological and evolutionary reasons:

  1. Fear of loss: Jealousy arises when we fear losing an important relationship, connection, or resource to someone else.

  2. Insecurity: Low self-esteem or insecurity about one's worth or attractiveness can make people more prone to jealousy.

  3. Comparison: Comparing ourselves to others and feeling inferior can trigger jealousy when others seem to have what we want.

  4. Evolutionary protection: Jealousy evolved to protect relationships and resources from threats, helping ensure survival and reproduction.

  5. Threat to status: Jealousy can arise when others threaten our social status, position, or standing in a group.

  6. Attachment insecurity: People with insecure attachment styles may experience more jealousy due to fear of abandonment.

  7. Unmet needs: Jealousy can signal unmet needs in relationships or areas of life.

Real Examples

  • Someone feels jealous when their partner spends time with someone else because they fear losing the relationship.

  • A person gets jealous of a coworker's success because it threatens their own status and makes them feel inferior.

  • Someone feels jealous of a friend's new relationship because they're single and want what their friend has.

  • A person gets jealous when their partner receives attention from others because they're insecure about their own attractiveness.

  • Someone feels jealous of a sibling's achievements because they compare themselves and feel they're not measuring up.

Practical Application

How to Apply

To manage jealousy more effectively:

  1. Understand the source: Reflect on what's triggering your jealousy—what are you afraid of losing or what need isn't being met?

  2. Address insecurities: Work on building self-esteem and addressing insecurities that contribute to jealousy.

  3. Communicate openly: Talk to partners or others about your feelings rather than letting jealousy fester or act out.

  4. Focus on your own growth: Instead of comparing yourself to others, focus on your own goals and development.

  5. Build trust: Work on building trust in relationships to reduce fear of loss that triggers jealousy.

  6. Practice self-compassion: Be kind to yourself when you feel jealous, recognizing that it's a normal emotion.

  7. Seek support: If jealousy is significantly impacting your life, consider therapy or counseling to address underlying issues.

How to Understand Others

When others are jealous:

  • Their jealousy often reflects fear, insecurity, or threats to important relationships or resources.

  • Understanding that jealousy serves protective functions helps you respond with empathy rather than just frustration.

  • People get jealous for various reasons, and their jealousy reflects their needs and fears.

  • Recognizing that jealousy signals what people value helps you understand their concerns and respond appropriately.