I understand that you are feeling hurt and betrayed, but seeking revenge is not a healthy or productive way to handle this situation. Instead, I would encourage you to focus on your own healing and personal growth.

1. Accept your emotions: It's important to allow yourself to feel the range of emotions that come with betrayal. Acknowledge your anger, sadness, and disappointment, and give yourself time to process them.

2. Seek support: Surround yourself with friends and family who can provide emotional support and give you a safe space to talk about your feelings. Consider seeking professional help from a therapist or counselor who can guide you through this difficult time.

3. Forgive and let go: Holding onto anger and seeking revenge will only prolong your own pain. Practice forgiveness as a way to release yourself from the negative emotions and move forward. This doesn't mean condoning her actions, but rather choosing to set yourself free.

4. Learn from the experience: Take the opportunity to reflect on what you have learned from this betrayal. This can provide valuable insights into red flags, personal boundaries, and trust issues that you can be aware of in future relationships.

5. Prioritize self-care: Invest time and energy into taking care of yourself. Engage in activities that bring you joy, pursue hobbies, practice self-care routines, and focus on personal growth. This will help rebuild your confidence and resilience.

6. Keep a positive mindset: Redirect your energy towards positive thoughts and focus on your own happiness. Surround yourself with positivity and engage in activities that build your self-esteem and help you move forward.

Remember, seeking revenge will not bring you true satisfaction or happiness. It's best to focus on your personal growth and healing, and trust that karma will take care of the rest.