12 TV co-stars you would never believe actually dated

These are 12 of your favorite TV co-stars who you would have never guessed took their on-screen relationship off-screen.

                            12 TV co-stars you would never believe actually dated
Jennifer Carpenter and Michael C. Hall (Source: Getty Images)

When it comes to romance and chemistry on-screen, actors will do what it takes to make people believe in it. When your favorite on-screen co-stars start to date off-screen it is nothing short of exciting and delightful. 

These are 12 co-stars you did not know dated: 

#12 Johnny Galecki and Kaley Cuoco, The Big Bang Theory

Johnny Galecki and Kaley Cuoco met while starring on the popular TV show 'The Big Bang Theory'. The couple dated in secret for almost two years before breaking up in December in the year 2009. The couple has remained friends and on good terms which is great since their characters on screen even got married. 

#11 Martin Freeman and Amanda Abbington, Sherlock

Martin Freeman's wife in real life, Amanda Abbington, also played his wife on screen, Mary on the show Sherlock. However, the couple separated in the year 2016 just before the filming of the most recent series. The couple was together for around 16 years before they went their separate ways.  

#10 Michael C. Hall and Jennifer Carpenter, Dexter

Despite the fact that Michael C. Hall and Jennifer Carpenter played the role of brother and sister on the show 'Dexter', the pair fell in love off-screen and started to date. They got married in the year 2008 but sadly announced their separation only two years later in 2010. The pair continued to work together until 2013 when Dexter ended. 

#9 Blake Lively and Penn Badgley, Gossip Girl

Fans loved the Dan and Serena show on Gossip Girl and to everyone's delight, Penn Badgley and Blake Lively took their romance off-screen as well. The pair dated for three years but went on to split up. They kept their breakup a secret for many months so that it would not affect their performance. Blake Lively is married to Ryan Reynolds and Penn Badgley is married to Domino Kirke. 

#8 Alexis Bledel and Milo Ventimiglia, Gilmore Girls

Gilmore Girls co-stars Alexis Bledel and Milo Ventimiglia dated for a total period of four years from the year 2002 to the year 2006. They recently reunited for a Gilmore Girls reunion. 

#7 Rachel Bilson and Adam Brody, The OC

Rachel Bilson and Adam Brody played the characters of Summer and Seth on the show 'The OC' and went on to fall in love off-screen as well. The couple dated for around three years before they eventually broke up in the year 2006. They continued to work together on the show until The OC ended. 

#6 Chad Michael Murray and Sophia Bush, One Tree Hill

The pair starred together in the popular show 'One Tree Hill' and eventually got married in real life. However, the marriage ended sooner than anticipated and they separated in the year 2005 after being married for just 5 months. They continued to work together till the year 2009. 

#5 Nina Dobrev and Ian Somerhalder, Vampire Diaries

Dobrev and Somerhalder split up in May 2013 after they dated for more than three years. The couple met on the sets of Vampire Diaries where they played the characters of the star-crossed lovers Elena and Damon. The pair has managed to remain good friends after their breakup and even after Ian Somerhalder married Nikki Reed.

#4 Dominic Monaghan and Evangeline Lilly, Lost

Dominic Monaghan and Evangeline Lilly began dating in the year 2004 when they met on the sets of the show 'Lost' which was in Hawaii. However, not even their paradise beginning could keep them together and they eventually split up five years later. 

#3 Milo Ventimiglia and Hayden Panettiere, Heroes

Milo Ventimiglia and Hayden Panettiere were both co-stars on the show 'Heroes' began dating shortly after they met on the set in the year 2006. At the time, Hayden Panettiere was almost ten years older than Milo and they separated in the year 2009 due to lifestyle conflicts. 

#2 Leighton Meester and Sebastian Stan, Gossip Girl

Gossip Girl co-stars Leighton Meester and Sebastian Stan dated for around two years after they met on the sets of Gossip Girl. The couple split up in the year 2010. Leighton Meester is now married to Adam Brody while Sebastian Stan has been linked to Dianna Agron and Jennifer Morrison.

#1 Ed Westwick and Jessica Szohr, Gossip Girl

Ed Westwick and Jessica Szohr were couple number three from Gossip Girl to date in real life. An unlikely combination on the show, but Chuck Bass and Vanessa took their romance off-screen. The pair dated on and off for four years before they split up in the year 2012.