Katherine Heigl, Maureen McCormick, and More Stars Who Dated Their On-Screen Family Members

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Nov 15, 2016 12:48 pm·

By Nakeisha Campbell

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Chip praised his wife for being the best mom while sharing a snap of Joanna and Crew snuggling on the couch. "This woman does a lot of things well! But I will say, the way she loves our kids is absolutely her crowning achievement," he gushed.

See the Cutest Photos of Chip and Joanna Gaines' Son Crew

On-screen siblings like Marcia and Greg Brady may be the definition of family goals, but their real-life chemistry wasn't as innocent as the one we saw on TV! It turns out Maureen McCormick and Barry Williams had a romantic relationship — and they aren't the only ones who found love with their fictional family members!

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Click through the gallery to see which other stars have dated their on-screen family members in real life!

1 of 13

Katherine Heigl and Jason Behr

While they played alien siblings on Roswell, they dated for a year and got engaged. However, they broke up a few months after their engagement.

2 of 13

Lauren Graham and Peter Krause

They played brother and sister on Parenthood, but after meeting on set they started to date in real life. The two have been together for over six years!

3 of 13

Emily VanCamp and Chris Pratt

They played brother and sister on Everwood, but they also dated in real life for over two years.

4 of 13

Maureen McCormick and Barry Williams

Though they played step-siblings on The Brady Bunch, it didn’t stop them from starting a real-life romance.

“I was ready to lose my virginity to Barry, and it might have happened one night at his house if not for his parents busting in on us. We couldn't keep our hands off each other,” Maureen wrote in her book Here’s The Story.

5 of 13

Joely Richardson and John Hensley

The pair played mother and son in the show Nip/Tuck, but in real life they actually dated for over two years.

6 of 13

Hayden Panettiere and Milo Ventimiglia

Milo played Hayden’s uncle on the show Heroes, but the two actually dated for three months in real life.

7 of 13

Jennifer Carpenter and Michael C. Hall

The two played siblings on Dexter, but in real life they dated for a year and even got married! Unfortunately, the couple split after two years.

8 of 13

Tamela Mann and David Mann

Though they played father and daughter on Meet The Browns, the couple was already married for several years before they started the show. They’re also the same age!

9 of 13