Game of Thrones costars Kit Harington and Rose Leslie are back to dating a year after their reported breakup.

While Jon Snow and Ygritte, the characters they play in the hit fantasy series, have ended their affair and will never meet again, the real-life couple rekindled their romance about three months ago.

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According to a source for Us Weekly, Harington and Leslie are just into that "casual" dating thing and are "having fun". The couple does not intend to move in together or carry out other major plans.

The latest buzz on the former couple getting back together started when they were spotted walking side by side after arriving at the Los Angeles International Airport last month for the Comic-Con event at San Diego.

While no public PDA moments were photographed, the 27-year-old costars were seen walking closely to each other in their casual attire. Both were wearing sunglasses with Harington dressed in a blue shirt and denim jeans. Leslie sported a pair of sweatpants and a sheer white tank top.

The British couple has known each other even before being cast in the popular TV series, but their romantic side showed more when they played the role of on-screen lovers.

The actors have never confirmed their real-life romance but Leslie did mention in an interview with the Daily Beast that she found Harington to be an amazing man.

She also described him as "very lovely, charming, sweet, and incredibly funny", which helps a lot in both their on-screen and off-screen romance, including her character's death scene in GoT's Season 4.

Leslie further commented, "And if you're willing to trust the other person and allow them to play on-screen with the scene, it's a lovely attribute to have."

When asked about her man's heartthrob status, Leslie jokingly said, "I don't think he considers himself a heartthrob," and added, "He's a lovely man!"

TagsGame of Thrones, Kit Harington, Rose Leslie, Jon Snow, Ygritte