Since lots of people meet romantic partners at work, it's not uncommon for actors to date co-stars. But when they date -- or even marry -- someone who plays an on-screen relative, it can seem a little creepy. Regardless, there are plenty of stars who've done it.
Milo Ventimiglia & Hayden Panettiere
Between 2006 and 2010, Milo played Hayden's uncle on NBC's 'Heroes' -- and for about a year and a half of that time, the pair also dated off-screen.
Matthew Broderick & Jennifer Grey
They had a testy relationship as brother and sister in 1987's classic John Hughes film 'Ferris Bueller's Day Off,' but away from the cameras, they were privately dating -- until a tragic car accident shoved their relationship into the spotlight.
Michael C. Hall & Jennifer Carpenter
Michael and Jennifer played adoptive siblings through all eight seasons of the Showtime series 'Dexter' -- but in real life, they were married from 2008 to 2011. Despite their divorce, they remain close friends.
Peter Krause & Lauren Graham
On the NBC drama 'Parenthood,' Peter and Lauren play brother and sister Adam and Sarah Braverman. Off-screen, they've been dating since 2010.
David & Tamela Mann
The Manns are the same age, just celebrated their 25th wedding anniversary, and have four children and several grandchildren together -- yet David played Tamela's father on the Tyler Perry series 'Meet the Browns.'
Bruce Campbell & Ellen Sandweiss
'Evil Dead' franchise star Bruce Campbell once said he lost his virginity at age 23 to co-star Ellen Sandweiss -- who played his sister in the first film.
Michael Emerson & Carrie Preston
Married since 2008, Carrie and Michael were blood relatives on 'Lost' the year before -- but because she played his character's mom in flashbacks, they never actually appeared together on-screen.
John Travolta & Diana Hyland
Hyland played Travolta's mother in the 1976 TV movie 'The Boy in the Plastic Bubble,' and despite an 18-year age difference, the two struck up a romance that lasted until her death from breast cancer the following year.
Will Arnett & Amy Poehler
Now separated, Will and Amy were married when they played incestuous ice skating siblings Stranz and Fairchild Van Waldenberg in the 2007 movie 'Blades of Glory.'
Chris Pratt & Emily VanCamp
In 2004, Chris and Emily had a real-life romance while also playing siblings Bright and Amy Abbot on the WB series 'Everwood.'