Kevin Winter/Getty
January 29, 2013 11:40 AM

Is it a makeover … or a breakover?

According to Jason Priestley, Jennie Garth‘s recent body makeover may have gotten a boost from good old-fashioned heartbreak.

“You spend a little time in Heartbreak Hotel, that’s what happens. Heartbreak Hotel diet is a good one,” Priestley joked with PEOPLE at the National Association of Television Program Executives (NATPE) convention in Miami on Monday, where he is promoting the new season of his comedy Call Me Fitz.

But when asked if a real life romance between Garth and Luke Perry – who the actor caught up with during last summer’s Old Navy commercial shoot – might be a possibility, Priestly joked, “I have no idea … but you can always hope!”

Priestley calls his new alter-ego Richard Fitzpatrick, a used car salesman turned politician, “the antithesis of Brandon Walsh,” and says of his twisted story lines (one episode has him sleeping with a nun in a church), “I sort of feel like I’m in this very high stakes game of chicken with our writers.”

RELATED: Jennie Garth Dating Jeremy Salken

Ironically, Jason claims any personal similarities to Fitz are old news. “Back when I was playing Brandon Walsh I was a lot more Fitz and now that I’m playing Fitz, I’m a lot more Brandon,” he says. He calls his life during the 90210 days, “not normal” and confesses, “I’m just glad we went through it before there was a TMZ and everyone had a video camera on their cell phone.”

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