I'm sorry to hear that you are going through this difficult situation. It's never easy to realize that someone you cared for and trusted was not treating you with the same level of respect and kindness. It's important to remember that you are not alone in experiencing such betrayal and it's not your fault for developing feelings for someone who didn't have your best interests at heart.

Here are some steps you can take to help heal and move forward from this situation:

1. **Acknowledge your feelings**: It's natural to feel hurt, angry, and betrayed in this situation. Allow yourself to feel these emotions and give yourself time to process them.

2. **Set boundaries**: It's important to establish clear boundaries with this person to protect yourself from further emotional harm. This might mean limiting or cutting off contact with her for a while.

3. **Focus on self-care**: Now is the time to prioritize self-care and do things that bring you joy and peace. Engage in activities that make you happy and take care of your emotional and physical well-being.

4. **Seek support**: Reach out to friends, family, or a therapist to talk about your feelings and gain perspective on the situation. Having a support system can help you navigate through this challenging time.

5. **Reflect and learn**: Take some time to reflect on the relationship and what you have learned from it. Use this experience as an opportunity for personal growth and understanding of your own boundaries and values.

6. **Move forward**: Remember that this is not the end of your journey and that you deserve love and respect from someone who truly values you. Stay open to new possibilities and relationships in the future.

I hope these steps help you in your healing process and lead you towards a more fulfilling and loving relationship in the future. Take care of yourself and be gentle with yourself as you navigate through this difficult time.