We can all agree that Littlefinger (Aidan Gillen) is the undisputed puppetmaster of Game of Thrones, but now that he's pledged his allegiance to House Stark after saving their asses at the Battle of the Bastards, he's heading into dangerous territory.

In the Season 6 finale, he outright told Sansa (Sophie Turner) that he wanted to rule the Seven Kingdoms with her sitting right beside him as queen, and while she didn't seem overly thrilled with that idea, Petyr Baelish isn't so easily deterred — this is the guy that spent his whole life angling to hook up with Catelyn Stark, even after he got her husband beheaded.

But there are two things standing in the way of Littlefinger's grand plan for the Iron Throne: Sansa's own common sense, and her "brother" — aka cousin — Jon Snow (Kit Harington), who is decidedly not a Littlefinger fan.

"If there’s one person that Jon’s not gonna like in this series, it’s him," Harington tells Mashable ahead of the Season 7 premiere.

In the first Season 7 trailer, we see Jon slamming Littlefinger up against a wall, and he's looking pissed.

For Harington, the moment is particularly satisfying for one big reason: "It’s such an echo of Ned Stark," he explains. "He is his father; he does not trust this man; he hates this man ... and he does not like his manipulation of his sister – you can pretty much guarantee that Littlefinger is not gonna be Jon’s favorite person."

Gillen cautions that we should wait for the context of the scene, telling Mashable, "I’m aware we do see a little snippet of what happens between Jon and Littlefinger in the trailer, but it’s so short; there’s a little more to it than that."

Still, he concedes that Littlefinger is well aware that Jon could ruin his schemes.

"Jon is a threat," he says. "I’ve spent the last season trying to undermine Sansa’s relationship with Jon, so it’s very much a part of what I’m working on [in Season 7]."

Turner says Sansa feels understandably frustrated that she's still being underestimated by the men around her, which is a major source of tension early on this season.

"She’s been through so much and she finally, with the help of Littlefinger, claimed back Winterfell, and now it’s kind of like, she’s still not getting the respect she deserves after everything she’s gone through," she explains. "Patriarchy is still playing such a huge part in her life and she’s frustrated by that and wondering why she needs men to justify her power."

But as Sansa says in the most recent Season 7 trailer, "the lone wolf dies, but the pack survives," and she's definitely smart enough to know that their family is stronger together — especially with the White Walkers readying for war.

Sorry, Littlefinger — if we had to place bets going into the new season, our money would be on the Starks. After all, winter is here.

Game of Thrones Season 7 premieres July 16 at 9 p.m. on HBO.