‘We f—ed up so many times.

We couldn’t keep a straight face!’

“We couldn’t keep a straight face!

sansa-arya

Credit: Helen Sloan/HBO

Our relationship is so close, but it’s only that fun side, never the business side.

It just terrified me.

It’s like performing for your mom.

When somebody is watching you don’t do it quite as well.”

Williams agrees: “It was the weirdest thing when we shot our first scene together.

We were both embarrassed to do our thing in front of each other.

It took a few hours for us to get serious and actually do it.

We’re not afraid to go there with each other because we feel so comfortable around each other.”

“So I was sitting in the corner going, Ahhh!'

and everybody there was fans of the show and going What is it?!'

And I rang Maisie up and was like, Can you believe it?

It’s amazing!'”

The two even got matching tattoos depicting the date they first met after they started shooting their scenes together.

The actresses just hope fans aren’t tempted to start comparing them again.

So, in the beginning, I was nervous.

But then my brain took over and I realized this is actually going to be really good fun."