According to attachment theory and

According to attachment theory and research, there are two fundamental ways in which people differ from one another in the way they think about relationships. First, some people are more anxious than others. People who are high in attachment-related anxiety tend to worry about whether their partners really love them and often fear rejection. People low on this dimension are much less worried about such matters. Second, some people are more avoidant than others. People who are high in attachment-related avoidance are less comfortable depending on others and opening up to others.