Drew Peterson, who is still married to his missing wife Stacy, is now engaged to a 23-year-old Chicago-area woman, his publicist said today.

Glenn Selig said the 54-year-old former police sergeant has been seeing the woman for about four months. She's the same age Stacy was when she disappeared last October. If they marry, she will be Peterson's fifth wife.

"This is a private matter as far as we're concerned," Selig said. "And he's entitled to be happy."

Peterson is a suspect in Stacy's disappearance, which police have called a "potential homicide." Peterson has long claimed that she left him for another man.

Peterson met with a divorce attorney in November. In Illinois, willful desertion or abandonment for at least one year is grounds for a divorce.