Jesse James says he is "truly very sorry for the grief" he has caused wife Sandra Bullock and his three children because of his "poor judgment."
The apology, which was issued on Thursday in a statement to People magazine, comes in the wake of tabloid and entertainment magazine reports that James, 40, was romantically involved with tattoo artist Michelle "Bombshell" McGee — something James neither confirms nor denies in his carefully worded mea culpa.
The former host of TLC's Monster Garage calls the "vast majority" of allegations against him "untrue and unfounded," USA Today reports.
"It's because of my poor judgment that I deserve everything bad that is coming my way," James said. "This has caused my wife and kids pain and embarrassment beyond comprehension and I am extremely saddened to have brought this on them."
He added that "the vast majority of the allegations reported are untrue and unfounded," but offered no other details, saying, "Beyond that, I will not dignify these private matters with any further public comment."
Representatives for Bullock did not respond to calls and e-mails seeking comment Thursday.
Publicly, there was no indication of strife as the couple appeared happily arm-in-arm throughout Hollywood's awards season while Bullock racked up the accolades, The Associated Press reported.