Wilf Scolding, the actor who portrayed Rhaegar Targaryen in "Game of Thrones" Season 7, has recently posted a selfie on Instagram in front of the Europa hotel in Belfast, a city where the last season of everyone's favorite fantasy drama is being filmed. Needless to say, this post stirred up many fan theories about Rhaegar's return in Season 8. And the fact that he deleted the photo only made his re-appearance far more likely to happen. The only way to see the young Targaryen prince is, of course, through Bran's flashbacks, so without further ado, let's get right into some of the key details from his life that might be featured in "Game of Thrones" Season 8.

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How did Rhaegar Targaryen become obsessed with prophecy?

Rhaegar Targaryen, the firstborn son of the Mad King Aerys II and his sister-wife Queen Rhaella, was born "in grief" during the Great Tragedy at Summerhall in 259 AC [VIDEO], a fiery inferno which saw the deaths of King Aegon V, his son Duncan (Prince of Dragonflies), and Ser Duncan the Tall, (Lord Commander of Kingsguard), among many others.

In his childhood, Rhaegar was bookish "to a fault," and it wasn't until he read about "something unknown" in his scrolls that he decided to become a warrior.

"I will require a sword and armor," Rhaegar told the master-at-arms, Ser Willem Darry, "It seems I must be a warrior."

There is no doubt that the prince actually read the Azor Ahai prophecy in his scrolls, and that he thought of himself as Azor Ahai reborn. That, coupled with the fact that he "excelled at anything to which he put his mind," led young Prince of Dragonstone to quickly become one of the best swordsmen in the Seven Kingdoms.

The 'Game of Thrones' version of the 'prince that was promised' prophecy

In 280 AC, Rhaegar married the Dornish Princess Elia Martell. Together they would have two children, Rhaenys, and Aegon, who Rhaegar believed is the prince that was promised, which is exactly what he told Maester Aemon, with whom he often corresponded.

"He has a song," Rhaegar told Elia in Daenerys' the "House of the Undying" vision." He is the prince that was promised, and his is the song of ice and fire."

In one of the previous articles, I talked about the possibility that Aegon, son of Elia [VIDEO], might actually be alive. But that is more of a book theory. In the show, however, we have another Aegon, our boy Jon Snow, son of Rhaegar Targaryen and Lyanna Stark.

It is my belief that we will see the version of Daenerys' the "House of the Undying" vision in "Game of Thrones" Season 8 with Rhaegar talking to his heavily pregnant second wife Lyanna Stark about their soon-to-be-born child. His role as the prince that was promised and the "song of ice and fire," could very well be the title of the final episode of the series.