ABC Photo Archives

By COLE KAZDIN and LAUREN SHER

If you’re a child of the ’80s, you’ll likely know the theme song to the sitcom “Growing Pains” by heart, and you probably tuned in every week to spend time with the Seavers.

Now, nearly 20 years after the show went off the air, the entire cast got together for a reunion on “Good Morning America” and a photo shoot for Entertainment Weekly magazine.

Stars Alan Thicke and Joanna Kerns (who played Dr. Jason and Maggie Seaver) had true on-screen chemistry, but were there any sparks of romance between them off-screen?

“We actually spent some time together off the set rehearsing lines, and I thought you were terribly attractive,” Thicke said. “But we were also smart enough to make the executive business decision that the series looked like it was pretty good and it would probably last longer than our relationship.”

Sorry, but no, Kerns said.  “We were just really good friends,” she said, laughing.

Kerns and Thicke became second-parents to their TV children – played by Jeremy Miller, Tracey Gold and Kirk Cameron, who were themselves coming to terms with new found fame, and the pressures of being child stars.

The show catapulted Kirk Cameron into teen heartthrob status. He was on the cover of every Tiger Beat and Teen Beat on newsstands in the 1980's.

“Growing Pains” also launched the careers of dozens of young stars who’ve made it big today, including Matthew Perry, Hilary Swank and Leonardo DiCaprio.

” We loved him so much!” Kerns said. ” He could mimic anybody.”

“He had a great sense of humor – brought a great light touch to the set,” added Thicke.

Where are your favorite characters now? Click here to catch up with the cast. Watch more of the T.V. reunion on “Good Morning America” Thursday at 7 a.m. ET.