"We tried to sneak a kiss into every scene we did together to freak everyone out a bit," Sophie Turner said in the interview.
As a Faceless Man in "Game Of Thrones", she can pretty much look like whoever she wants.
Nevertheless Maisie Williams has admitted playing characters like Arya Stark can be "difficult sometimes" due to how she is portrayed onscreen.
"I've never felt very pretty because I've never been portrayed as very pretty on screen," she told Glamour UK. "I actually think that's really great, but in terms of how I personally feel, it's been difficult sometimes."
While obviously no-one would argue the 21-year-old actress isn't gorgeous in real life, the character she plays in the epic HBO fantasy series was originally written as physically very different from her older sister Sansa, played by Sophie Turner.
In the show, and to a greater extent in the novels they are based on (George RR Martin's "A Song Of Ice And Fire"), the Stark sisters take after a different parent, both physically and in personality: Sansa is beautiful like her mother Caitlyn, and relishes being a noblewoman, while Arya is more like her dad Ned, and enjoys horse-riding and fencing.
In the books, she is even referred to as "Arya Horseface" and is often mistaken for a boy, and even poses as one for a time; however as the story progresses she comes to resemble more her aunt Lyanna, a woman so beautiful she was the cause of the whole Westeros war.
Despite their differences, Sansa and Arya are extremely close -- just like the actresses that play them.
"Maisie is definitely my protector and I'm hers, too. I know if anything happened –- especially if it was on 'Game Of Thrones,' which it never, ever would –- she'd go crazy and protect me," Turner told the mag. "Maisie is my strong home."
Maisie also revealed it was Sophie who convinced her to see a therapist.
"Sophie knows too much about me to not be my friend. I can't tell you the amount of times Sophie said, 'Go to therapy' before I actually did. She really helped me through some messy break-ups and some friend break-ups," she said.
"Whenever I'm like, 'I need help! This is bigger than anything I can sort out on my own,' Sophie is my point of call. I think therapy is so important. You should absolutely speak to someone, even if in your head you go, 'Yeah, I knew that!"
The duo even admitted some people think they are a little too close
"People always think Maisie and I are a couple," Sophie admitted. "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!"
"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 final season of "Game Of Thrones" kicks off on HBO on April 14.