In a previous interview with ABCNews.com, Peterson's publicist, Glenn Selig, said that no wedding date had been set for the couple because of Peterson is still legally married to Stacy Peterson.
According to the Chicago Tribune, Drew Peterson has met with a high-profile divorce attorney to look into how to get granted a divorce on the basis of abandonment.
Drew Peterson garnered media attention after his wife, Stacy Peterson, 24, went missing Oct. 28, 2007. He was widely criticized for his blase attitude toward his wife's disappearance, even alleging to the press that his wife's PMS had led her to run off with another man.
The case remains open and is under investigation by the Illinois State Police and the Will County State's Attorney Office.
Drew Peterson told ABC News in an interview last year that the search for Stacy Peterson was a "waste of time."
On the anniversary of Stacy Peterson's disappearance, Drew Peterson told ABC's "Good Morning America" that he hopes she one day turns up.
"I hope someday she pops her head up and shows herself," he said.
Drew Peterson's legal troubles grew when the body of his third wife, Kathleen Savio, was exhumed and he was named a suspect in her 2004 death, which had initially been ruled an accident. Authorities now believe Savio's mysterious bathtub drowning was a homicide.
Peterson has denied any wrongdoing in both Stacy's disappearance and Savio's death, telling ABC News in December, "I've done nothing wrong."