1. Money lending. For example, a friend borrows money and fails to repay it, or exaggerates the income of an investment project to deceive investment, etc., resulting in financial losses. It was quite a painful experience.

2. Emotional exploitation. Some friends will take advantage of each other's feelings or sincerity and then walk away after achieving a certain purpose. For example, being taken advantage of during a relationship or marriage can cause deep psychological trauma.

3. Promises not kept. Friends often make certain promises or guarantees to each other, but in the end they fail to fulfill them, leaving the other party embarrassed or sacrificed at critical moments. This can create doubts about people and commitments.

4. Secret rumor. Revealing mutual secrets or airing certain personal topics can make people feel betrayed and humiliated. Many people have had this experience.

5. Use and throw away. Some friends care about you mainly because they hope to obtain benefits or benefits from you. When the other party's goal is achieved, they will drift away and eventually be abandoned. This behavior makes people feel like tools.

Therefore, people will inevitably encounter certain use and betrayal in the process of social interaction. This is also a lesson that needs to be vigilant and tempered in getting along. When you are deeply hurt by a friend, in addition to feeling angry and painful, you also need to perform necessary self-repair. Then after the washing of time, the haze in the heart can be removed, and tolerance and trust can be regained.