Why some people have trust issues?

Some people develop trust issues after being betrayed by a lover or friend.

Some parents raise their children to not trust any person easily, which leads to serious trust issues when they get older.

Some people have a natural fear of being betrayed, which prevents them from trusting any person easily.

Introverts usually do not open up to people easily. They take their time to know a person first before they can trust them. (See The body language of introverts)

Some people develop trust issues when they hear from the people around them about bad experiences that they went through related to trusting someone.

Experiencing a troubled childhood is one of the most important factors leading to trust issues.

Some people have a fear of being intimate or close to someone, as they believe it might never last. This can lead to trust issues as well. (See Why some people fear intimacy?)

Often in relationships when a woman knows her partner had cheated on someone before, for example, she will not easily trust this partner.

Some people develop trust issues as a result of their fear of rejection. Therefore, they choose to not put themselves in any situation that may lead to rejection.

Some people are paranoid, which means they believe people want to hurt them in some way regardless of their true intentions.

Antisocial people usually do not trust people easily as a result of their lack of social interactions.

People who have insecurities often find it hard to trust other people, especially if what they say or do contradicts their self-image.