Cheating Guv's Mystery Mistress Comes Forward

6/28/2009 5:30 PM PDT BY TMZ STAFF
South Carolina Gov Mark SanfordThe Argentinian gal that helped destroy South Carolina Governor Mark Sanford's family has finally fessed up to her sins.

41-year-old Maria Belen Chapur sent a statement to Buenos Aires news network C5n, admitting she and the married Guv have been having a relationship, according to the AP.

Chapur says she refuses to talk about her private life -- and that the 200-word statement is all she's gonna say about the affair.