It is the fear of loss that is the foundation of jealousy. Many partners that struggle with jealousy, fear the loss of their relationship, the loss of self-respect, even loss of respect of their friends and family as they how they would be seen as a ‘fool. Being overly fearful fosters feelings of insecurity.
Sometimes jealousy is driven by an individual’s low self-esteem. They may wonder, “Why do they really love me? I don’t get how somebody like them could be attracted to somebody like me!” It’s one of the mysteries of love that we are not supposed to understand precisely why another person loves us.