Kelly Clarkson: Husband Cheating on 'Wrapped In Red' Singer?

Kelly Clarkson's husband has been accused of cheating on her, Radar Online reported Tuesday.

Clarkson married Brandon  Blackstock in October but a woman told The Dirty website that she has been engaged in an inappropriate relationship with him for quite some time. Although the woman claimed the relationship was no sexual, she did warn the first American Idol winner to play close attention to her new husband's activities.

"We haven't slept together," she claimed, "but we've been intimate in other ways. I really hope his wife keeps her eye on him because he's not the great man she thinks he is."

However, Blackstock's ex-wife has come to his defense. Melissa Ashworth had two children with Blackstock before divorcing and told Radar Online that the claims against him were ridiculous.

"This is ridiculous ... this silliness," Ashworth said. "I have my two children [by Brandon] right here, who I love."

Ashworth wished only the best for her ex and his new wife.

"I adore Kelly and Brandon as a couple, so if I say anything it's going to be positive," she said.

Clarkson and Blackstock announced in November that they would be expecting their first child together. Neither has publicly commented on the allegations surrounding their marriage.