1. Emotional unresolved: Dreaming of your ex boyfriend betraying you may indicate that you still have unresolved emotional entanglements or regrets about this relationship deep inside, and this kind of dream is a manifestation of not completely letting go emotionally.
2. Reflection on self-worth: Betrayal in dreams may also reflect concerns or anxieties about your own value in relationships, and may be a reflection on self-identity, trust, or self-esteem in real life.
3. Warning or psychological defense: Sometimes, such dreams may be subconscious reminders to pay attention to certain signs in the current relationship, or as a psychological defense mechanism to help you deal with and prevent potential harm in the future.