Former "Gilmore Girl" Alexis Bledel and "Mad Men" star Vincent Kartheiser are engaged, The Associated Press reports. Bledel's publicist, Meghan Prophet, confirmed the news, which was first reported by Us Weekly. She says the couple have been dating for about a year. Kartheiser, 33, plays ad man Pete Campbell on the hit AMC network drama, where, last season, Pete had an extramarital affair with the wife of a commuting friend. She was played by Bledel in a guest-starring role. Bledel, 31, is best known for her role as the teenage daughter in the long-running series "Gilmore Girls."