Being a very large production that it is, it is not surprising that "Game of Thrones" cast members spend a lot of time with one another on set.

Which is probably why Dean-Charles Chapman, who plays Tommen Baratheon, and Nell Tiger Free, who plays Myrcella Baratheon, have allegedly developed a friendship that bloomed into a dating relationship.

"17 year old Dean-Charles and 15 year old Nell have been PDA-ing all over social media, and sharing a ton of selfies with each other: travelling together, cuddling together, attending music festivals together, and even going on camping trips together," Celeb Dirty Laundry reported.

Dean-Charles Chapman and Nell Tiger Free's purported relationship may appear humorous for "Game of Thrones" fans.

In the story, the cast members' characters, siblings Tommen and Myrcella Baratheon, are products of incest committed by the Queen Mother Cersei Lannister, and her twin, Jamie Lannister.

Not only are the "Game of Thrones" cast member couple together most of the time; Tommen and Myrcella are purportedly very sweet on their social media posts.

"Other signs that they're having a real life romance? Free has been referring to Chapman as "my boy", which, yes, to be fair, could just be a teenage thing that's totally platonic, but come on!" Jennifer Still of Bustle previously wrote.

"There's also the whole close/coy situation they have going on in some of their photos, which is totally adorable but also totally indicative of the fact that they're absolutely, 100 percent dating and I won't hear anything else about it," the article continued.

"Myrcella and Tommen are together, and there's nothing anyone can do to convince me otherwise!"

Too bad, Dean-Charles Chapman and Nell Tiger Free will not be spending time on the "Game of Thrones" set - as Tommen continues to reign in Westeros, his sister, Myrcella, appears to have died in the arms of their father, Jamie, aboard the ship bound home.