As "Game of Thrones" begins filming season 4, co-stars Kit Harington and Rose Leslie have split according to reports, confirming their off-screen romance.

"Game of Thrones" fans will know Kit Harington and Rose Leslie as the on-screen couple Ygritte and Jon Snow, but it seems the pair have gotten closer than simply method acting.

As confirmed by Toronto Sun, Kit Harington and Rose Leslie began dating as they began working together on "Game of Thrones."

But, the relationship has since died, as sources confirm that Rose Leslie is seeing someone new and out of the limelight.

"Rose and Kit are no longer together. Rose has a new boyfriend who is not in the public eye. She is eager to keep this relationship out of the spotlight," says a source.

But what does this mean for "Game of Thrones" season 4? Can the former couple still work together?

Given that the Kit Harington and Rose Leslie both appeared at San Diego Comic-Con recently, it seems the pair can at least tolerate each other, despite Leslie snatching another beau.

In fact, the pair sat next to each other during the "Game of Thrones" panel.

And what does "Game of Thrones" season 4 hold for both actors in terms of their characters?

"I think she is gonna be after vengeance," says Harington according to Digital Spy. "Jon doesn't always make the smartest decisions. He had to make that decision and...you'd question him if he didn't end up getting with her, because you can see his appeal to her."

"So, I'm glad that he did. It's one of those things, you sleep with someone one time and they shoot you with arrows. It's like life."

But the question is, is Kit Harington dating Emilia Clarke?

The pair arrived at the TCA Awards to accept the "Best Drama" award for "Game of Thrones." They arrived at Chateau Marmont together prior to the award show.