I think that jealousy exists because it is a good mate retention strategy (it helps us keep our partners because we become more attuned to potential threats to our relationship).

It is a pity that more often, jealousy seems to be associated with relationship dissatisfaction, feelings of insecurity and conflict. Most important, it seems that the degree of impact that jealousy has on our relationships is strongly influenced by how we respond to feelings of jealousy.

Partners who communicate about their feelings of jealousy are typically more satisfied in their relationships than those who act distant or avoidant.

I am Jealous woman but my feelings of jealousy make me pay more attention to and show more affection for my partner (in a caring and not possessive way, of course) this is more positive for relationship than if i start a fight with my partner or accuse him of betrayal.

I like words of Maya Angelou: "Jealousy in romance is like salt in food. A little can enhance the savor, but too much can spoil the pleasure and, under certain circumstances, can be life-threatening"

What about to find our own ingredients to enhance the savor of romance ?
Nastya