A Georgia businesswoman said Monday she and Herman Cain had a 13-year extramarital affair, an allegation the Republican presidential hopeful denied as strongly as earlier allegations of sexual harassment.

“Here we go again. I didn’t do anything wrong,” Cain said on CNN. He acknowledged he knew the woman who was behind the accusation.

Moments after Cain issued a preemptive denial, an Atlanta television station posted a story to its website quoting a woman identified as Ginger White as saying, “It wasn’t complicated. I was aware that he was married. And I was also aware I was involved in a very inappropriate situation, relationship.”