updated 05/09/2013 AT 12:00 PM ET
•originally published 05/09/2013 AT 9:55 AM ET
Vampire Diaries costars Ian Somerhalder and Nina Dobrev have called it quits after dating for several years, PEOPLE has confirmed.
The couple were last seen taking a late-night trip to a cat hospital together last month, with no sign then that their own relationship may have been hurting.
Somerhalder, 34, and Dobrev, 24, kept their romance secret during their early days as a couple, despite evidence that they were together.
“I didn’t want to be dating one of my costars,” Dobrev told Seventeen last fall. “My goal on the show was to be professional. But sometimes you can’t help who you have a connection with, and you can only fight it for so long – which I did for a really, really long time.”
A THOUGHT FOR TODAY:People change and forget to tell each other. -Lillian Hellman, playwright (1905-1984)
ian somerhalder (@iansomerhalder) May 9, 2013