"There is no sex tape," the Oscar-winning actress said in a statement to People magazine Tuesday. "There never has been one and there never will be one."
Bullock was presumably responding to a Radar Online report that her estranged husband, who allegedly cheated on her with at least four other women, has made more than a dozen sex tapes. Today's statement marks Bullock's first public remarks since reports of James' alleged philandering surfaced.
ABCNews.com's requests for comment from Bullock's representative were not immediately returned.
Meanwhile, James is struggling to get back into her good graces.
"When all is said and done, he wants the same people who were living in his house before all this happened to still be living there," his attorney, Joe Yanny, said in a statement Monday. "And he wants to save his marriage with the woman he loves more than anything in his life."
James' lawyer's statement came almost a week after his publicist announced the motorcycle mogul had checked himself into a treatment facility.
According to RadarOnline.com and TMZ.com, James checked into the Sierra Tuscon facility in Arizona on March 26. It specializes in drug, alcohol and sex addiction, as well as other disorders. A representative for Sierra Tuscon said the facility doesn't confirm or deny reports of patients in the facility.
But James "is doing as well as he can be," Yanny told People. "He's focusing on what he's doing and trying to make himself better."
Sierra Tuscon might have special meaning for James -- it's the same facility that Bullock reportedly used while she prepared to shoot the 2000 movie "28 Days," in which she plays a hard drinker forced into rehab.
Considering James has no known history of drug or alcohol abuse, it's plausible that he's taking a page from Tiger Woods' book, seeking to tame the beast that allegedly made him cheat. Sound like a stint at the spa? Yes and no, according to mental health experts contacted by ABCNews.com. The surroundings are reportedly lavish.
"It's definitely posh," said integrative medicine specialist Dr. Eric Braverman, who has sent patients to Sierra Tuscon in the past. "There's therapy, there's a forest, there are outdoor activities. It's like Canyon Ranch with counseling."
Jesse James: Trying to Save Marriage to Bullock
But if James is undergoing sex addiction treatment, he's got a world of (emotional) pain ahead of him.
"Most studies show that 80 percent of people struggling with sexual compulsions have some kind of family-of-origin or sexual trauma," said Aline Zoldbrod, a psychologist specializing in individual and couples therapy and author of the book "SexSmart."
"Trauma is not just sexual trauma, it's emotional neglect, physical neglect or abuse, emotional abuse, experiencing or witnessing family violence, and/or growing up with parents who are addicted or mentally ill. In treatment, the patient is forced to take a long, hard, deep look at his family history and to confront the painful feelings which he or she has avoided in a supportive, informed atmosphere."