Bill O’Reilly told Donald Trump he wanted to go “mano a mano” Thursday night following the Fox News debate as he stepped on stage to be eye to eye with the party’s Republican frontrunner.

Sensing irritation from Trump over a tough question, O’Reilly asked, “Are you getting mad at guys like me when you ask negative questions?”

“I do think you have become negative,” Trump said.

O’Reilly seemed surprised.

“Me? Why?”

Trump said he could not quite put his finger on it. “I don’t know that. You have to ask your psychiatrist.”

Trump then took a minute to re-introduce his wife to O’Reilly, but O’Reilly wasn’t quite ready to let the exchange go.

“I think I have been very fair to you, very fair,” he told Trump.

“Fair, but you get carried away with yourself,” Trump said.

O’Reilly asked for an example, but Trump couldn’t give him an answer.

Watch the video below: