Adam Brody and Leighton Meester
Leighton was in a relationship with her Gossip Girl co-star Sebastian Stan for about three years, from 2008 to 2010. In 2012, she briefly rekindled a romance with her Remember the Daze co-star Aaron Himelstein, after initially dating in 2007.
Adam dated The O.C. co-star Rachel Bilson for three years but the relationship ended in 2006.
Adam and Leighton met while on the set of The Oranges. In November 2013, the couple got engaged after a year of dating and married in February 2014 in a private ceremony.