[cnn-photo-caption image= http://i2.cdn.turner.com/cnn/2010/images/02/10/art.edwards.file.gi.jpg caption="Former Sen. John Edwards' spokeswoman flatly denied a story in the National Enquirer Wednesday."]
Washington (CNN) - Former Sen. John Edwards' spokeswoman flatly denied a story in the National Enquirer Wednesday that claimed the 2004 Democratic vice presidential nominee is engaged to his mistress, Rielle Hunter.
The Enquirer reported that Edwards proposed to Hunter on the day he told her that he would publicly acknowledge being the father of their child, Frances Quinn.
Edwards was taking steps to run for the 2008 Democratic presidential nomination when he began his affair with Hunter, a videographer. The former senator denied that he was the father of Frances Quinn for more than a year, but he acknowledged paternity late last month.
Edwards and his wife, Elizabeth, have legally separated.
"John has said that when his divorce is final, he'll buy her a diamond ring," the Enquirer quotes a 'close source' in the story as saying about the marriage proposal. "But in the meantime, he's getting them a house."
But Joyce Fitzpatrick, an Edwards spokeswoman, said in an e-mail to CNN that the report was "absolutely untrue."
The Enquirer broke the story of Edwards' affair with Hunter as well as his being the father of Frances Quinn.
A federal grand jury is investigating payments the former senator's campaign and supporters made to Hunter, who worked as a videographer for Edwards as he prepared for his 2008 presidential campaign.
Andrew Young, a former Edwards' aide complicit in helping the former senator hide the affair, revealed in his new tell-all book "The Politician" that prosecutors peppered him with a number of questions regarding the payments made to Hunter.
"I sat in the witness chair, and as the men and women of the grand jury scrutinized me, the prosecutors pressed me for exact information about checks that were written, the way the money was used and the timing of events," Young wrote. "They wanted names, dates, and amounts in very specific terms."