Fans of 'Game of Thrones' freak out over Gilly's latest reveal about Jon Snow's lineage SPOILER ALERT: The content below will give away the episode's plot.

"Is it just me, or does Gilly always happen to be reading the perfect book, first the dragonglass, now she found out about my marriage #GoTS7" Source: Twitter "Is it just me, or does Gilly always happen to be reading the perfect book, first the dragonglass, now she found out about my marriage #GoTS7" Source: Twitter Photo: Twitter Photo: Twitter Image 1 of / 89 Caption Close Fans of 'Game of Thrones' freak out over Gilly's latest reveal about Jon Snow's lineage 1 / 89 Back to Gallery

WARNING: This post is full of spoilers. Be ware if you haven't watched the latest episode.

Gilly is our new hero with the latest bomb she dropped casually in Episode 5 of Game of Thrones, titled "Eastwatch," on Sunday.

WHAT YOU MISSED: 'Game of Thrones season 7, episode 5, 'Eastwatch' recap

Story continues below...

In one line, she revealed that Rhaegar Targaryen annulled his marriage to his first wife, Elia Martell, and married Lyanna Stark, making Jon Snow a legitimate Targaryen and the true heir to the Iron Throne and not a bastard like everyone in the show thinks.

"Maynard says here that he issued an annulment for Prince 'Ragger' and remarried him to someone else at the same time in a secret ceremony in Dorne," Gilly said, while reading through the overly detailed account Maester Maynard.

Mind. Blown.

Sadly, Sam was too busy and stressed to catch or care about the woke words of his partner.

The theory of John's parentage, referred to as R+L=J among many fans, had been a hot topic for years, until it was all but confirmed during Season 6 of the show.

Because of this news and Sam's reaction (or lack there of), fans of the show went to social media to quickly react to the historic discovery.

SEE THEM ALL: Fans of 'Game of Thrones' react to 'Eastwatch' with amazing memes

This was among the many plot developments that left fans freaking out and turning to Twitter to share their reactions.

Click through the gallery above to see the best reactions on Twitter from the latest "Game of Thrones" episode.