Will they, won't they, how will it all go down, do people really want it, how much money is it going to make, which characters are going to be killed off in the process?
All valid questions floating around since rumours started that the X-Men would be joining the rest of the Marvel Cinematic Universe (MCU).
Now, with plans in motion for Walt Disney to buy 21st Century Fox, the two massive film franchises could technically feature in the same films for the first time.
When asked about the X-Men joining the MCU, Kevin Feige, president of Marvel Studios, said that he was, "just waiting for a call saying yay or nay from people far above me... of course, it would be nice."
Feige made the comment at the 2018 Produced By conference, confirming that the decision actually lies with those people higher up than him.
So just like the rest of us, he's sitting and waiting for an answer that's taking bloody ages to arrive.
Credit: Marvel Studios
Although the X-Men and the various MCU casts - including the Avengers and the Guardians of the Galaxy - inhabit the same universe in their long-running series of comic books, they have never met on screen, and most believed they never would.
It's all because of a messy, complicated web of licensing deals. Marvel filed for bankruptcy in 1996, and sold off a lot of their creations - which meant that 21st Century Fox got its hands on X-Men and the Fantastic Four, while Sony nabbed Spider-Man.
After that, Marvel was purchased by Disney in 2009, and got cracking with the development of the MCU, which took the first Iron Man movie (2008) as its starting point.
If it comes to pass, this would also mean the Deadpool, the foul-mouthed mercenary played by Ryan Reynolds, could join in with the MCU fun.
The MCU is already massive. It includes the many characters seen in Avengers: Infinity War, as well at the Netflix shows Daredevil, Jessica Jones, Luke Cage, Iron Fist and The Punisher, as well as ABC's Agents of S.H.I.E.L.D., Agent Carter, and Inhumans.
The only concern now is that a rival bid has been made by Comcast, who also want to get their hands on 21st Century Fox.
Shareholders in 21st Century Fox are due to meet tomorrow to discuss whether to consider Comcast's bid.
What do we reckon? Captain America and Deadpool on the same screen? Could be fun.
Featured Image Credit: 20th Century Fox / Marvel Studios