Bolingbrook's Drew Peterson appears on 'Nightline'

Drew Peterson, the ex-Bolingrook policeman who's suspected in his wife's disappearance told a national television show that his much younger fiancee likes him because he's a "good guy."

Peterson appeared on ABC's "Nightline" Thursday night. The 55-year-old Peterson, who's still legally married to his missing fourth wife Stacy, says he'll marry his fiancee some time in the next few months.

Peterson says the 24-year-old likes him "a lot." She turned down a request for an on-camera interview.

Stacy Peterson disappeared in October 2007. Drew Peterson claims she left him for another man.

Authorities are also investigating the death of Peterson's third wife, Kathleen Savio, whose body was found in an empty bathtub in her house in 2004. The former Bolingbrook police sergeant hasn't been named a suspect in her death.