More often than not, we tend to be jealous of those who we are emotionally involved with – husbands, wives, girlfriends, boyfriends, or partners in general. Sometimes people get jealous of those who are (or at least appear to be) more beautiful or successful than themselves. The most common manifestations of jealousy include fear, deep insecurity, constant worries, and envy. And very often people try to hide or mask it. That is why it is sometimes hard to tell if someone is being jealous of you or not.