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

Shining Like the Sun! See ‘GMA’ Anchor Amy Robach’s Bikini Photos

Out for a Swim! See ‘GMA’ Host Lara Spencer’s Bikini Photos

Priscilla Presley’s 2 Kids: Son Navarone and Late Daughter Lisa Marie

See Elizabeth Banks’ Beautiful Bikini and Swimsuit Moments: Photos

Donny Osmond Calls Utah Home! Tour His Gorgeous Estate With Wife Debbie
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!
MUST SEE: 'Full House,' 'Sex and the City,' and More TV Shows Whose Lead Roles Were Recast
Click through the gallery to see which other stars have dated their on-screen family members in real life!
1 of 13

The WB
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

Getty Images
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

The WB
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

Getty Images
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

FX
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

NBC
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

Showtime
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

TBS
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

Paramount Pictures
Jennifer Grey and Matthew Broderick
They played brother and sister on Ferris Bueller's Day Off, but in real life they secretly dated for a year.
10 of 13

Getty Images
Maggie Grace and Ian Somerhalder
They played step-siblings on the drama Lost, but shortly after their characters got killed off the show, the pair dated for nine months.
11 of 13

FOX
Shannen Doherty and Jason Priestley
They played twins on Beverly Hills, 90210, but they also dated briefly real life.
12 of 13

ABC
Susan Dey and David Cassidy
The two allegedly had a brief relationship while they played siblings on The Partridge Family.

Shining Like the Sun! See ‘GMA’ Anchor Amy Robach’s Bikini Photos

Out for a Swim! See ‘GMA’ Host Lara Spencer’s Bikini Photos

Priscilla Presley’s 2 Kids: Son Navarone and Late Daughter Lisa Marie

See Elizabeth Banks’ Beautiful Bikini and Swimsuit Moments: Photos
