The two, who initially formed a great bond early on in season one when they both left King’s Landing, decided to take their relationship to the next level now Arya is all grown up.
Speaking about the sex scene after the episode aired, Maisie, 22, admitted she originally thought it was all a big joke.
The actress explained showrunners David Benioff and Dan Weiss have previously pranked co-stars in the past by sending false scripts.
“At first, I thought it was a prank,” the British star told Entertainment Weekly.
“I was like, ‘Yo, good one.’ And [the showrunners were] like, ‘No, we haven’t done that this year.’ Oh f**k!”
When it came to the encounter with Gendry actor, Joe Dempsie, Maisie said it was “uncomfortable”.
“In the beginning, everyone was really respectful,” she divulged.
“No one wants to make you feel uncomfortable which kind of makes you feel more uncomfortable, because no one wants to look at anything that they shouldn’t look at, which in turn makes you feel like you look awful because everyone is kind of like… You want people to act more normal.”
Maisie continued: “Then [the scene] was rushed. We were [directed by] David Nutter, who has a habit of speaking fast anyway.
“By the end we’re rushing to finish the scene and David is going, ‘Okay, you’re going to come in and do this and do that and, great, take your top off’ — and then walked off. And I’m like… ’Okay. Let’s do it.’”
Meanwhile, Maisie, who grew up playing the fierce sword-wielding character, Arya Stark, in Game of Thrones, has admitted she now wants to take a break from acting.
Speaking about her colourful dyed locks in an interview with Rolling Stone, the British actress said she now feels “free” after making the drastic change.
“I guess, subconsciously, I dyed it because I didn’t want to work,” she told the publication.
“It’s a pretty good way of stopping that. And it just feels so good, so me.”
Maisie continued: “I’ve battled my whole adolescence with trying to put a stamp on my appearance, but also be a blank canvas as an actor.”
The Game of Thrones favourite is keeping her options open for the future.
“What’s hit me the most about the show ending isn’t the show ending,” she spilled. “It’s like, I’m free. I can do anything now.”
Game of Thrones season eight, episode two airs tonight on Sky Atlantic at 9pm.
Game of Thrones season eight, episode three continues Sunday on HBO.