1. Jon Snow and Cersei Lannister will get married
We hate to say it, but if Jon and Cersei could just put all their difference behind them, they might actually make a good team when it comes to fighting the Night King.
As The International Business Times points out, "If Jon Snow marries Cersei Lannister, then he will have the army of both the King's Landing and Winterfell, which can actually help him defeat the White Walkers."
2. Jon Snow will turn on Daenerys Targaryen and murder her
Just when you think Daenerys and Jon are about to make a super-cute (albeit incestuous) couple, he goes and kills her. Well, maybe.
If the theory that Jon is indeed the "prince who was promised" of the Red Priests' religion, he has to have the legendary sword Lightbringer, which will only come about if it's quenched in "living fire" aka he has to plunge it into the heart of a loved one. So could that be his new girlfriend, Dany? Awkward.
The original incarnation of the PWWP, Azor Ahai, did this by stabbing his wife in the heart. And she let him too. Crazy, right?
3. Is Bran Stark really the Night King?
One of the biggest Game Of Thrones theories out there is the one about Bran Stark being the Night King.
It started to surface during season seven, then viewers noticed a similarity between the Night King and Bran's fashion choices. So it must be true, right?!?!
But Bran actor, Isaac Hempstead-Wright, isn't so sure that's a possibility. He told Esquire: "That theory has really blown up in the last few weeks. I saw someone tweeting pictures of me and the Night King together and were like, 'Yep. That's him. Definitive proof!' I was like we don't look that much alike. I saw someone photoshop the Night King's buckle onto Bran and say, 'Yep it's him!'
"I think the cool thing now about this being the last season is that the theories that everyone has are going to tie up. If anyone has had any theory about any of the characters who are still alive will probably get answered now. I personally think the Night King theory is a bit far-fetched, but I would have said the same thing about the Hodor theory. And when I saw that on paper, I was like, 'What! No way!' But this is Game Of Thrones, and anything is possible. I'd love to be the Night King. That would be so fun to be like, 'It was me all along.' But I don't know—I doubt it."
4. The Night King wants to save his undead army from a life of being, erm, undead
Another Night King theory is that he's heading to God's Eye—that huge lake that holds The Isle of Faces. He's doing this because that's where the peace pact between the first men of Westeros and the Children of the Forest happened. If something about the region has magical immortality powers, that could obviously be a huge draw for him.
A Game of Thrones mega-fan wrote on Reddit: "Ultimately I think his end goal is to reach the Isles of Faces and use its magical properties to give life to his undead army. Eastwatch by the Sea is the closest part of the wall to the Gods Eye. Harrenhall is on the northern shore of the Gods Eye. The writers have dropped hints about the Gods Eye for years and have always discussed the Riverlands with great detail."
5. Jaime Lannister will murder his sister/lover Cersei Lannister
In the GOT books, Maggy the Frog prophesied that Cersei would be strangled by her little brother: "Three [children] for you. Gold shall be their crowns and gold their shrouds. And when your tears have drowned you, the valonqar (High Valyrian for "little brother") shall wrap his hands about your pale white throat and choke the life from you."
Everyone assumed this would be Tyrion as he and Cersei don't always see eye-to-eye. But if you think back to Ed Sheeran's cameo, and the song he sang, we think it'll be Jaime doing the choking.
Ed's song was called "Hands Of Gold" which tells the story of a man filled with "shame and bliss" for his lover, which would make sense, what with all the incest 'n' that. And guess who has a golden hand? That's right: Jaime.
6. Euron Greyjoy is the father of Cersei Lannister's unborn baby
Something funky is definitely going on between Euron and Cersei—much to the dismay of Jaime. But could that stretch to the pair making sweet, sweet love?
We all assumed that Cersei's unborn baby is Jaime's, but now we're not so sure. Here's why: Euron and Cersei came up with a plan to betray Jon and Daenerys without telling Jaime, which makes us wonder what else they're up to behind his back.
Then there's the fact that Cersei seemed totally fine with Jaime riding north to fight the White Walkers, which doesn't seem like a risk you'd want your babydaddy to take.
7. Varys is a merman
This is a personal favorite theory of mine. A lot of fans believe that Varys is in fact a merman. The books mention merlings on a number of occasions, that it's totally plausible. Plus, according to a Redditor, Varys is always wearing long robes to cover his fish body.
This would make sense considering his response when Tyrion threatened to have him thrown off a ship: "You might be disappointed by the result."
Plus, it would explain how he was able to travel from Dorne to Daenerys's ship in Mereen overnight in the middle of season 7. He swam like the super-speedy merman that he is!
8. Sansa is pregnant with Ramsay Bolton's baby
The theory that Sansa is carrying Ramsay's baby is a real bummer. Speaking about the wedding night during her chat with Littlefinger, in which she had a go at him for allowing her to marry that douchebag, she said: "I can still feel it. I don't mean 'in my tender heart it still pains me so'—I can still feel what he did in my body standing here right now."
Fans believe she is referring to a literal baby inside her as opposed to physical damage. At some point, Jon Snow also commented on her new, big coat. So, is that to hide a baby bump?
Game Of Thrones season 8 is due for release on April 14!
This article originally appeared on Cosmopolitan.com/uk. Minor edits have been made by the Cosmo.ph editors.