I was fired from my last job. The girl that got me fired has used her friends in that same job to find where I work and get me fired from current job

So she is now "stalking you"? Go to the police and file a report so that a judge can potentially enter an order of protection to have her stop. If your employer makes a mistake, believes you are a harasser and fires you, having your own honest facts police report, hopefully followed with an OOP, might help? Your issue is frankly more in line with a domestic relations or family law matter. Family law lawyers might help you the most? They can give you suggestions on these types of very messy issues. Employers today must investigate. If they treat everyone with similar allegations the same way how would you prove discrimination unless the police investigate and help you prove it's her and not you? This is a good example for why any personal or intimate relationship at work regardless of consent is very rarely a good idea.