U.S. Ambassador to the United Nations Nikki Haley insists she is not romantically or sexually involved with President Trump, and called the speculation "highly offensive" and "disgusting."

"It is absolutely not true," Haley said in a Friday podcast about comments author Michael Wolff made regarding extramarital affair allegations and Trump's grooming Haley for a future in national politics.

"I have literally been on Air Force One once and there were several people in the room when I was there,” she told Politico Thursday about a flight from Washington to Long Island, N.Y. in late July. "He says that I’ve been talking a lot with the president in the Oval about my political future. I’ve never talked once to the president about my future and I am never alone with him."

Wolff, who wrote the book Fire and Fury: Inside the Trump White House, recently told HBO's host Bill Maher he was "absolutely sure" Trump is having an affair and hinted to a part of the book where readers would know he was referencing the woman. A line many pointed to in the book said, "The president had been spending a notable amount of private time with Haley on Air Force One and was seen to be grooming her for a national political future."

"It goes to a bigger issue that we need to always be conscious of: At every point in my life, I’ve noticed that if you speak your mind and you’re strong about it and you say what you believe, there is a small percentage of people that resent that and the way they deal with it is to try and throw arrows," Haley said.

"Others see that as either too ambitious or stepping out of line. And the truth is, we need to continue to do our job and if that means they consider it stepping out of line, fine. And if that means they’re gonna throw stones, people see lies for what it is. Do I like it? No. Is it right? No. Is it gonna slow me down? Not at all," she added.

"Every time this has happened, it only makes me fight harder," she said. "And I do it for the sake of other women that are behind me because they should never think that they have to put their head down and cower out of fear that somebody’s gonna do something to you."