There could be several reasons why someone who was once nice to you started being mean. It's essential to recognize that human behavior is complex and influenced by various factors, both internal and external. Here are some possible explanations:
Personal issues or stress: The person might be going through personal challenges or experiencing stress in other areas of their life. As a result, they could be taking out their frustrations on others, including you.
Misunderstandings or conflicts: Miscommunications or disagreements could have occurred, leading to hurt feelings or resentment. Unresolved conflicts might manifest as a change in their behavior towards you.
Changes in circumstances: Changes in the person's life, such as a new job, relationship, or living situation, could be affecting their mood and behavior. Sometimes, these changes can inadvertently impact how they interact with others.
Emotional distancing: People may distance themselves emotionally from others as a defense mechanism. They might have reasons unrelated to you for doing so.
Jealousy or envy: If they perceive you as successful or happy, they might feel envious or resentful, leading to a change in their behavior.
Shift in priorities: Their focus and priorities might have changed, causing them to invest less time and effort in maintaining relationships, including the one they had with you.
Peer influence: External influences, such as new friends or social groups, might be affecting their behavior and attitudes.
Personal growth or change: People evolve over time, and their values, interests, and attitudes can change. These changes might lead to shifts in their behavior towards others.
Unresolved issues from the past: There could be unresolved issues or unresolved feelings from the past that are now influencing their behavior towards you.
Regardless of the reason, it's essential not to take their change in behavior personally. People have their own struggles, and their actions are a reflection of their state of mind and life circumstances. If you feel comfortable doing so, you may consider gently asking them about the change in their behavior and if there's anything you can do to address any issues. However, if their behavior becomes toxic or harmful, it's crucial to prioritize your well-being and establish healthy boundaries.