Some guys get jealous when they are out and they see another guy looking at their woman. They get all macho and want to go beat the guy up. That guy is needy, jealous, insecure, and controlling. It tells a woman: He does not have enough confidence in his own masculinity to feel he deserves to have a woman like me. When a guy is jealous, possessive, and a control freak, usually the thing that he fears the most is exactly what is going to happen – he is going to lose her.