This was interesting psychologically to watch. How to handle Donald Trump. If you're an aggressive male interviewer (or rival candidate), Trump tenses up and gets aggressive and defensive in response. Erin Burnett, though, has had a history with Trump (appearing on his "Apprentice" show in 2009 as a guest judge), and he clearly feels comfortable with her. He's still fast-talking and opinionated, but her persona is not interfering with his (as a journalist's should not be), and he's a lot looser/calmer/more comfortable in his communication style.