It's important to understand this before we go deeper: Jealousy is a choice. And if you change the way you think, jealousy goes away. In order for jealousy to breathe and thrive, you have to decide that an outside force poses a threat to your relationship (see the diagram below).

What is the main reason for jealousy?

Jealousy may be driven by low self-esteem or a poor self-image. If you don't feel attractive and confident, it can be hard to truly believe that your partner loves and values you. Other times, jealousy can be caused by unrealistic expectations about the relationship.

Is jealousy a natural thing?

According to evolutionary psychologists, the answer to all these questions is no. Jealousy is part of our nature, found in people all over the world.