Rob Lowe: My Wife Is 'Glad' I'm Done Filming Drew Peterson TV Movie

Rob Lowe speaks onstage at 'Breakaway' Press Conference during the 2011 Toronto International Film Festival at TIFF Bell Lightbox in Toronto, Canada, on September 10, 2011 Rob Lowe speaks onstage at 'Breakaway' Press Conference during the 2011 Toronto International Film Festival at TIFF Bell Lightbox in Toronto, Canada, on September 10, 2011

Rob Lowe spent hours in the makeup chair being transformed into accused wife-killer Drew Peterson for the upcoming Lifetime TV movie, “Drew Peterson: Untouchable,” and while the physical likeness was removed at the end of the day, the actor says the emotional baggage and demeanor remained – a fact his wife was less than pleased with.

“I’m going to be honest — my wife is glad I’m done with this,” Rob told Access Hollywood at the “Drew Peterson: Untouchable” junket in New York City on Wednesday. “She didn’t like the way I looked and she definitely did not like my mental outlook.”

While the veteran actor has learned how to leave his characters at work at the end of the day through his decades of onscreen experiences, he admits elements of the mustached and controversial cop bled over to his home life.

“You try to shut it down and I do — I’m not one of those actors that needs to keep it going all the time. After so many years, that muscle [that] I’ve built up, I can use it and shut it down,” he told Access. “That said, you can’t help but kind of begin to see things through the character’s eye because you need to see things through the character’s eyes so you can ad lib, so you can react, so you can do the things you need to do as an actor.

“So inevitably, that rubs off a little bit and it’s funny — it was not my most cuddly, user-friendly time as a husband,” he added.

In order to realistically resemble the Illinois police officer-turned-murder suspect, Rob had to gain weight – a requirement that allowed him to have a bit of fun in the name of work.

“Man, if I’m going to gain weight, I’m going down the way I want to go down — you know what I’m saying?” he said, laughing, when asked how he packed on the pounds. “Pizza, cheeseburgers, milkshakes and eating late at night. Yes!”

Rob’s naughty eating habits would not please his uber-healthy “Parks and Recreation” character, Chris Treager, who Rob revealed will soon drop his overly positive outlook on the hit Amy poehler-lead comedy.

“You’re going to see a cool side to him ‘cause we know he’s enthusiastic, he’s positive, he’s upbeat,” he told Access. “The question is what happens to Chris when he get depressed? And we’re going to find out – and it’s not pretty.

“You do not want to see Chris Traeger depressed,” he added.

“Drew Peterson: Untouchable” will air on Lifetime on January 21 at 8 PM, and “Parks and Recreation” airs on Thursdays at 8:30/7:30c on NBC.

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