I understand that it can be incredibly frustrating and painful to see your ex-boyfriend spending time with people who have caused harm to your relationship. However, it's important to approach the situation with a level-headed perspective and focus on your own well-being. Here are a few suggestions on how to handle the situation:

1. Process your emotions: It's completely normal to feel anger, sadness, and even betrayal in this situation. Allow yourself to feel and process these emotions, but try to avoid dwelling on them for too long. It's important to prioritize your own healing and moving forward.

2. Avoid confrontations: While it may be tempting to confront your ex-boyfriend and the women involved, engaging in confrontations can often escalate the situation further and create more negative energy. Instead, try to distance yourself from the drama and focus on your own personal growth.

3. Focus on yourself: Use this time to focus on self-care, personal development, and pursuing your own goals and interests. Surround yourself with positive influences and supportive friends who can help you through this challenging time. By truly investing in yourself, you'll not only become stronger but also attract healthier relationships in the future.

4. Establish healthy boundaries: Set clear boundaries with your ex-boyfriend to ensure that he understands your feelings. Communicate assertively but calmly, expressing that spending time with those who have caused harm to your relationship is hurtful to you. It's important to advocate for yourself and let him know that you deserve respect.

5. Seek professional support: If the emotions you're experiencing are overwhelming or affecting your daily life, consider reaching out to a therapist or counselor. They can provide you with guidance and tools to help you cope with the situation and move forward in a healthy way.

Remember, you have the power to control how you respond to this situation. Focus on your own growth and happiness, and eventually, you will be able to move on from the pain and find someone who truly values and respects you.