Both are relatively fresh off breakups -- Ariana just split from rapper Big Sean in April and Niall recently broke up with his Australian girlfriend -- so the late night exit after a night of partying left people in an are-they-or-aren't-they speculation frenzy.
Ariana is having none of it -- she shut down those rumors with some very choice words to The Sun on Sunday.
"A girl can be friends with something with a d**k and not hop on it," she told the British newspaper. "We live in a horrendously one-track-minded world."
The Scream Queens star continued on a self-described "feminist rampage," adding, "I'm tired of needing to be linked to a guy. I'm not Big Sean's ex, I'm not Niall's possible girl. I'm Ariana Grande. If that's not enough, then don't talk to me!"
You go, girl!
Ariana clarified her statements in a long letter that she posted across her social media platforms on Sunday, which she starts off by stating that "being 'empowered' is not the same thing as being a 'bitch.'"
"What I meant when I said what I said about not being Sean's ex is that I am tired of living in a world where women are mostly referred to as a man's past, present or future PROPERTY / POSSESSION," she wrote. "I... do. not. belong. to anyone. but myself. and neither do you."
She goes on to explain that she's over being asked "boy questions" in interviews because she realized she has so much more to talk about. "I'm currently making the best music I've ever made in my life, having the best time of my life on tour with some of the greatest people I've ever known, working my ass off every single day."
Spoken like a true "diva" -- as in a woman who knows her self-worth.
Watch Ariana talk about those diva rumors in the video below.