These 'Game of Thrones' Stars Just Got Engaged

We don't know yet if Jon Snow is going to sit on the Iron Throne, but we know a little bit more about what's in store for the man who plays him, Kit Harington. This week, sources say that Harington and GoT co-star Rose Leslie are officially engaged, a development that advances a relationship that began on the GoT set.

Via People.

It was the on-screen romance that sparked a thousand memes — and now, five years later, a real-life engagement.

Kit Harington and Rose Leslie are engaged, a source confirms to PEOPLE.

The actors first stirred up relationship rumors in 2012, in sync with their fictional Game of Thrones counterparts, Jon Snow and Ygritte.

Though they reportedly split after a year, they later reconciled and continued to fuel romance speculation until they officially confirmed the relationship in April 2016, making their red carpet debut as a couple at the Olivier Awards in London.

A month after going public with the relationship, Harington, 30, opened up about the early days of the romance, which began on set while shooting in Iceland for season 2 — sweetly admitting that those weeks were his favorite of the series, and for good reason.

“Because the country is beautiful, because the Northern Lights are magical, and because it was there that I fell in love,” he said in a cover story for L’Uomo Vogue. “If you’re already attracted to someone, and then they play your love interest in the show, it becomes very easy to fall in love.”

Back in 2014, Leslie, 30, also touched on her relationship with her heartthrob costar — and their famous season 3 sex scene — in an interview with PEOPLE.

“Kit is a lovely and funny man, and a dear friend,” she said. “We had known each other before we started working together on Game of Thrones. It was always such a privilege to be working opposite him and such a blessing that we get on in real life because it made our characters more believable.”

“It was my first sex scene that I’ve ever done and it was weird,” she admitted. “But I felt that it was important for the characters and the audience to get to see just how much they have fallen in love. We got to see them in their own little world, with no outside interests or power plays or nasty surprises. It was just two characters finally getting together.”

“I said to her — because she moved into my house — I said, ‘Look, darling, it’s important that this is our space, that it feels like our space and that you haven’t just moved into mine. Move anything you want around — change anything or chuck anything out.’ ”

“So I went to the shops and I came back and said, ‘What did you decide?’ ” he continued. “And she went, ‘We’re moving the kitchen downstairs.’ ”

Read the rest of the story at People.

Do you think that the relationship between Jon and Ygritte is GoT's greatest love story? Tell us your thoughts in the comment section below.