Kat Von D posted a message on Facebook saying her former fiance, custom motorcycle builder Jesse James, cheated on her with 19 women. James and actress Sandra Bullock divorced in 2010 after he admitted he had sex with numerous other women during their five-year marriage. The one-time "Monster Garage" and "Celebrity Apprentice" star quickly started dating Von D, star of the recently canceled reality series "L.A. Ink," but they broke up in September. Von D, whose real name is Katherine Von Drachenberg, posted a message on Facebook Sunday saying James was unfaithful to her during their relationship, too, UsMagazine.com said. "Today I encountered the 19th girl to add to the list of people Jesse cheated on me with during this last year," she wrote in a post titled, "Thank You, Jesse James."