Jealousy In Relationships

This is a common theme that is discussed by those who are in love, or by their friends. Why does one feel jealous? Is the relationship weak? If the relationship is strong, should one feel jealous at all? Or it is one's genes? I mean, if I am very sure that I love a girl and I am totally committed to her, and I believe that she is equally in love with me, why should I feel jealous? Or why should she feel jealous? But jealousy is a fact of life. Let us examine more of jealousy.

Let us take a simple example. Say, your child loves one of your neighbors and she is equally attentive to him/her. Would you feel jealous of that or proud about that? Would you try to take away your child from the neighbor? Would you confront the neighbor? You may do nothing like this, if I am not wrong in my analysis. But what if your child is replaced by your spouse/girlfriend/boyfriend? Your reaction may be entirely different. If yes, why? What is the difference in both the situations?

The main difference is faith. You have total faith that your child may run around and play with many people around the day. But he/she will return to you at night, or if hungry, or if injured? Am I correct? You don