18. Kat Dennings and Nick Zano
During the making of the comedy series 2 Broke Girls, Kat Dennings and Nick Zano’s complex relationship carried over into the real world. The two dated for a while before breaking it off in 2014. Dennings then embarked on a high-profile romance with singer Josh Groban, before announcing their split in 2016
17. Scott Speedman and Keri Russell
The J.J. Abrams and Matt Reeves TV drama Felicity was released in 1998 to widespread critical acclaim. What you might not know, though, is that show stars Scott Speedman and Keri Russell converted their on-screen relationship into a real-life one. They dated each other from 2000 to 2001.
16. Harry Hamlin and Lisa Rinna
Of all the TV couples on this list, undoubtedly the longest-lasting partnership is that of Harry Hamlin and Lisa Rinna. They’ve been married since 1997, so this year marks their 20th year together. In Veronica Mars, the two love birds played the married couple Aaron and Lynn Echolls.