Almost every episode of HBO's Game of Thrones produces at least one shocking moment that fans can't stop talking about until the next episode rolls around. Sunday night's Book of the Stranger was no different, ending with a jaw-dropping scene involving Emilia Clarke's Daenerys Targaryen. One of the actress' Season 1 co-stars, Jason Momoa, recently expressed his praise for the actress in a new Instagram post, which has already gone viral in less than 24 hours. Be warned, if you haven't watched last week's Game of Thrones, there will be SPOILERS below, so read on at your own risk.

At the end of Season 5, Daenerys was discovered by a horde of Dothraki soldiers, after she had escaped an assassination attempt in Meereen. This season, she revealed to Khal Moro (Joe Naufahu) that she was the widow of Khal Drogo (Jason Momoa). She was informed that she must now go to the Dothraki capitol of Vaes Dothrak, where she will be part of the Dosh Khaleen, widows of other former Khal's. Being the "breaker of chains," that arrangement didn't sit too well with Dany, and at the end of Book of the Stranger, she set a Dothraki hut ablaze, killing the leaders inside as she emerged naked, unburnt, as the remaining Dothraki soldiers bowed before her. Yesterday, Jason Momoa posted an image from last night's fiery finale, along with the following message to Emilia Clarke.

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"Hahahahahahahahahahahhhahaha. I love GOT. Don't f--k with my boo. Hahahahahahahahah @emilia_clarke love u Moon of my life ALOHA DROGO."

Jason Momoa starred as Khal Drogo in the first season of Game of Thrones before he was killed, although he did come back in the second season, seen in Dany's vision when she visited the House of the Undying. Throughout the first four seasons of Game of Thrones, the producers had enlisted a strict no-flashbacks policy, but that all changed last year. The Season 5 premiere opened with a flashback of a young Cersei visiting a strange witch, who gives her a prophetic assessment of her future. Some have speculated that, since Khal Drogo has been mentioned recently this season, that he could return in some form of a flashback, but that hasn't been confirmed.

It's also worth noting that this season marks the return of Bran Stark (Isaac Hempstead-Wright), who has been training with the Three-Eyed Raven (Max Von Sydow) to hone his special skill known as greensight. This ability allows Bran to see the past, present and future, and we've already seen glimpses of the past this season, thanks to Bran's greensight visions, which revolve around Bran's family, particularly his late father Ned. It's possible that Khal Drogo could surface in one of these visions, although it is unlikely, since Bran has never interacted with Daenerys or Khal Drogo on the show before.

As for Khal Drogo's possible return, nothing has been confirmed quite yet, but then again, this season has proven to be the show's most secretive yet. The network even refrained from sending out the first four episodes to members of the press, most likely because one of the show's biggest secrets was revealed in the second episode, which featured the resurrection of Jon Snow. Stay tuned for more on this hit series, and check out Jason Momoa's Instagram photo below.