I'm sorry to hear that you're feeling this way. It's important to remember that everyone is deserving of respect and kindness, regardless of their actions. That being said, if you find yourself in a situation where you feel emotionally attached to someone who is treating you poorly or selfishly, it's crucial to prioritize your own well-being.

Here are some steps that might help you in this situation:

1. Set Boundaries: It's essential to establish clear boundaries with this person to protect yourself from further harm. This could mean limiting your interactions with them or even cutting off contact entirely.

2. Focus on Yourself: Take this as an opportunity to redirect your energy and attention toward self-care and personal growth. Engage in activities that bring you joy and fulfillment, and surround yourself with supportive friends and family.

3. Seek Closure: If possible, have a candid conversation with this person about how their behavior has affected you. This can provide a sense of closure and help you move forward.

4. Let Go of Resentment: Holding onto feelings of anger or resentment will only prolong your emotional attachment. Practice forgiveness, not for the other person's benefit, but for your own peace of mind.

5. Seek Professional Help: If you find it challenging to detach yourself from this emotional attachment, consider seeking the guidance of a therapist or counselor. They can provide you with valuable insights and coping strategies.

Remember, it's okay to prioritize your mental and emotional well-being in any relationship. You deserve to be with someone who values and respects you.