Could Niall Horan and Hailee Steinfeld be Hollywood's new power couple? Maybe. The duo has been fueling speculation that there is something romantic going on between them for weeks — attending a Backstreet Boys concert, watching a performance of Hamilton in London, and going to her brother's birthday party together. And finally, sources have confirmed to E! News, "It's true that Hailee and Niall are dating, but at this point, it's still pretty casual."

Casual or not, Hailee is already wearing his clothes! She shared a photo of herself on Twitter sporting Niall's concert merch and captioned the shot, "?51.4613° N, 0.1156° W." Turns out, these coordinates marked the O2 Academy in Brixton, London where Niall was performing that night.

In light of the photo, fans expressed their excitement about the possibility of this potential relationship. "I always thought you and Niall would be a good match….just putting that out to the universe," one person wrote. Another said, "I think they would be an awesome couple just off of their personalities."

And while this all might seem quite new, the former One Direction star has gotten quite flirty with the Pitch Perfect actress on social media in the past. Back in December, he wrote her a birthday message that read, "Happy birthday to the loveliest person on the planet and one of my best friends @haileesteinfeld . Have no idea what the hell is going on in this photo. Love ya hails."

The two have yet to comment on the romance, but, unfortunately, if the rumors are true, they don't have much time together before they both get super busy. Niall is set to go on a solo tour this summer promoting the biggest hits from his debut album, Flicker and Hailee is preparing to hit the road with Charlie Puth as well as working on her own new music.