Did Kelly Clarkson marry a cheater?

Could Kelly Clarkson's marriage be on the rocks already? Clarkson, who married Brandon Blackstock back in October of this year, and announced that she was pregnant, has been slammed with allegations of her newly husband cheating on her.

According to ninemsn, an anonymous woman came forth to TheDirty.com claiming that she had been getting close to Brandon over the past five months.

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

This is not the news an expectant mom and newlywed wants to hear, right? Well it gets more juicier, because Brandon's ex-wife Melissa Ashworth has come to defend her ex's fidelity to Kelly, and supports the couple, saying, "This is ridiculous ... this silliness," she told Radar Online. "I have my two children [from Brandon] right here, who I love. I adore Kelly and Brandon as a couple, so if I say anything it's going to be positive."

Ninemsn also claims, this is not the first time Brandon has been accused of cheating. Last year, his family friend Jerry Reed claimed that Melissa "caught [Brandon] running around on her three or four times" during their marriage. But as Melissa says, the rumours are groundless. Kelly and Brandon haven't commented on the claims either - besides, Kelly has more important issues to worry about.

The singer has apparently been experiencing a lot of morning sickness, which forced her to cancel her international promo tour for her Christmas album, Wrapped In Red.