Since FX announced last week that the network and Donald Glover would no longer be collaborating on a Deadpool animated series due to “creative differences,” there have been a lot of questions regarding what exactly caused the demise of the series. While many initially speculated that Glover’s busy schedule may have forced him to bow out of the series, the actor and writer took to Twitter to deny the reports.

In a since-deleted Twitter thread, he tweeted, “For the record: I wasn’t too busy to work on Deadpool,” following up with a 15-page mock Deadpool script filled with references to his and his younger brother Stephen’s departure from the project.

Now Stephen — who was set to write, executive produce, and serve as showrunner alongside his older brother — has opened up about why FX and Marvel backed out of the Deadpool series, and it seems the decision may have had something to do with a particular “Delicate” singer.

In a now-deleted tweet, Stephen revealed that the reference to a Taylor Swift episode in Donald’s mock script was very real — and may have been the “last straw” for the network.

According to a screenshot of the tweet on The Wrap, he wrote,There really was a Taylor Swift episode. It was HILARIOUS. And it definitely was the last straw lol.”

The Atlanta writer followed up with another since-deleted tweet, expressing his disappointment over the cancellation. He wrote, “Our show wasn’t too black. It wasn’t really that black at all. But we definitely wanted to give Rick and Morty a run for their money and I think we would have. Proud of the gang.”

The scrapped Deadpool animated series was set to begin airing sometime in late 2018.

While Stephen doesn’t say that Swift herself was behind the cancellation — rather citing it as the breaking point between the network, Marvel, and the Glover brothers. And knowing Swift’s meticulous dedication to image and brand control, she likely would not be thrilled to have been the center of Deadpool jokes.

Not gonna lie, we’re a little sad we’ll never get to see the Deadpool animated series. Luckily, we’ll still be able to see the brothers collaborate on Atlanta and hopefully a host of other projects in the future.