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Sign of jealousy
Feelings of jealousy are not uncommon in love relationships. Jealousy is a set of emotional feelings that results when an individual perceives that the love relationship he or she has with a person is being threatened. The specific feelings are those of fear of loss or abandonment, anxiety, pain, anger, vulnerability, and hopelessness.

Of 103 women and men of varying ages and involvements in relationships , 75 percent reported feeling jealous. One-half of the respondents describes themselves as "jealous" people. (Pines and Aronson, 1983)