They fell in love while portraying the disastrous marriage between Mary Queen of Scots and the arrogant Lord Darnley.
But Saoirse Ronan and Jack Lowden will be hoping life does not imitate art as the couple stepped out, with the actress appearing to wear an engagement ring.
Ms Ronan, 29, and her actor boyfriend, 33, set out from their £2.5million home in Islington, north London, with their terrier Fran.
She then stopped to plant a big kiss on Lowden’s cheek.
Wedding rumours began when the couple refused to deny that the Dunkirk star proposed during a hiking holiday in Perthshire in July.

They fell in love while portraying the disastrous marriage between Mary Queen of Scots and the arrogant Lord Darnley

But Saoirse Ronan and Jack Lowden will be hoping life does not imitate art as the couple stepped out, with the actress appearing to wear an engagement ring

Ms Ronan, 29, and her actor boyfriend, 33, set out from their £2.5million home in Islington, north London, with their terrier Fran. She then stopped to plant a big kiss on Lowden’s cheek

Wedding rumours began when the couple refused to deny that the Dunkirk star proposed during a hiking holiday in Perthshire in July
He posted a photo from a peak with a hand appearing to be Ms Ronan’s wearing a diamond ring.
The couple then bought their three-bedroom home, further fuelling the speculation.
Lowden started dating the Oscar-nominated star in 2018 after they worked together on Mary Queen of Scots where Ms Ronan played the lead opposite Margot Robbie’s Elizabeth I.