Jesse James has denied he made a sex tape with wife Sandra Bullock -- or any other woman for that matter.

"The claims of sex tapes are untrue and completely fabricated," a representative for the reality star told People in a Wednesday statement.

The former Jesse James is a Dead Man and Monster Garage star was responding to a recent RadarOnline report in which a source claimed that James made at least 12 homemade sex tapes but had not detailed whether Bullock appeared in any of them.

Bullock has also denied the existence of a sex tape featuring her and James.

Last month, James was accused of carrying out an 11-month affair with tattoo model Michelle "Bombshell" McGee while Bullock was in Atlanta filming The Blind Side -- for which recently won the Oscar for Best Actress.

A second woman then claimed that she also had a two-year affair with James, while Los Angeles photographer Brigitte Daguerre subsequently stated they had sex four times after he hired her to do styling work for his West Coast Choppers in 2008.

A fourth woman has also come forward and claimed through a representative that she had an "intimate" three year relationship with James.

Last week, it was reported that James admitted to Bullock that he had affairs with seven different women before he left for sex addiction treatment at Arizona's Sierra Tucson Treatment Center.

While James reportedly left over the weekend when Bullock apparently refused to take his phone calls, he subsequently returned on Sunday night.

James has apologized to Bullock and his three children from two previous marriages while also claiming the "vast majority" the allegations against him are "untrue," however Bullock has reportedly begun to prepare divorce papers to end the four-year marriage.