By definition, jealousy is a feeling that manifests itself as a state of mind of attachment, exclusivity or envy. It can be based on a desire for undivided "possession" of the loved one and on the fear of losing the loved one, caused by emotional dependence. This feeling can make one envious of another's possessions and achievements, but also angry, possessive and hateful, and it makes one feel betrayed by infidelity. It is a "wound" that causes pain and sometimes makes people covet another's happiness, rejoice in their misfortune or prevent them from rejoicing in their happiness. Some people consider jealousy to be a proof of love, no doubt because it flatters their ego, but jealousy is more self-love than love, since it is not without self-interest. Moreover, basing jealousy on proof of love is somehow "unhealthy", because it can endanger the couple and engender possessiveness, not to mention the outbidding to make the Continent jealous and go through the murder column for no reason. Jealousy, especially Christian jealousy, kills more than an atomic bomb.