Jealousy is about attention, love, care from other people. That is, when we are jealous of a loved one - in fact, we envy someone third, to whom, as it seems to us, our loved one gives more warmth, attention and love.
Pathological distrust of a partner is usually associated with fears of loneliness, due to the trauma of rejection or separation experienced in childhood. In extreme cases, such jealousy can be a manifestation of some mental disorders (disorders of personality, behavior and emotions).
Jealousy manifests itself as a reaction to injustice, due to anxiety and feelings of helplessness, inability to express love or self-centeredness - rejection of other points of view than one's own.
In psychology, jealousy is seen as a negative feeling that arises from self-doubt when feeling a lack of attention, love, respect or sympathy from a very close person, while someone else really or imaginary receives all this.
According to one study, jealousy and surveillance of a partner has a negative impact on relationships, contributing to relationship dissatisfaction.