“…This barrier, with its related feelings of being left out, cheated, excluded, unappreciated, and so on, is experienced as standing in the way of our obtaining what we would like. For jealousy to be possible, some such inaccessibility must be felt (see also Corzine, 1974;Daher & Cohen, 1979;Durbin, 1977;Ellis, 1972;Evans, 1975;Francis, 1977;Mazur, 1973;Seeman, 1979;Wagner, 1976). We must feel it is difficult or impossible to have the desirable experience of the other person.…”