Being jealous means, their a big possibility that your bf/gf leaves you for another person but what about being jealous in their hobbies like sports? Jealousy is a familiar experience in human relationships. Jealousy is an emotion and typically refers to the negative thoughts and feelings of insecurity, fear, and anxiety over an anticipated loss of something that the person values, particularly in reference to a human connection. And often consists of a combination of presenting emotions such as anger, resentment, inadequacy, helplessness and disgust. It is not to be confused with envy.
Psychologists have proposed several models of the processes underlying jealousy and have identified factors that result in jealousy. Sociologists have demonstrated that cultural beliefs and values play an important role in determining what triggers jealousy and what constitutes socially acceptable expressions of jealousy. Biologists have identified factors that may unconsciously influence the expression of jealousy. Artists have explored the theme of jealousy in photographs, paintings, movies, songs, plays, poems, and books. Theologians have offered religious views of jealousy based on the scriptures of their respective faiths.