Please respect yourself. This woman does not love you. You deserve for yourself as well. She just wants someone who will take care of her kids. Stop being an idiot.

Separate and move on with your life with someone who respects you. Because I will tell you this, once she finds a man who will stick around after the next time she gets knocked up, she is leaving your ass. And this is after draining you emotionally and financially.

Respect yourself. Find a therapist. And then find someone who will love you back.