The two are so close they revealed people often mistake them for a couple.
Watch out Joe Jonas. It looks like you’ve got some competition.
The on-screen sisters were recently interviewed by British Glamour, where they admitted they try to kiss on set.
"People always think Maisie and I are a couple. I mean, I am obsessed with her, so you never know… I've got an addiction to Maisie Williams. I actually stalk her hashtag on Instagram!" Sophie revealed.
"Even though we are sisters [in Game of Thrones], we tried to sneak a kiss into every scene we did together to freak everyone out a bit. It kept them on their toes, making sure they were following the script."
The real-life besties also shared what they like to do in their spare time. Sophie admitted the two get high, sit in bathtubs and rub makeup brushes on their faces during their regular sleepovers.
Sophie even shared the cover shot of the magazine and joked "Our first shoot as a married couple".
How do we apply to be a part of this friendship?
Watch below... 'Game of Thrones' Star Sophie Turner Says She And Maisie Williams Got High In A Bathtub: