Jealousy has been as prevalent as love since ancient times. It's either resentment of others' success or fear of losing something. Ralph Hupka defines it as anticipatory emotion seeking to prevent loss
Jealousy stems from deep insecurities about inadequacy and attention. Past experiences and personal worth issues can trigger jealousy
Jealousy stems from insecurity and lack of trust in the relationship. Jealousy creates a vicious cycle of control and possessiveness. Love has little to do with possessive behavior