Well, Adventure Time fans, it's the end of an era. After nine glorious seasons, the series finale of Adventure Time has officially aired and fans have some serious feelings about it — especially one moment in particular, the confirmation of Marceline and Princess Bubblegum's relationship.

While the female-presenting characters have long been OTP material, with fans suspecting, wishing, and hoping that the relationship would be real, it appears that the folks behind Adventure Time wanted to save the best for last. The Marceline/Princess Bubblegum moment was brief, but it was also a powerful moment for queer representation.

In the scene, Marceline runs to Princess Bubblegum following a final battle in the Gum War to see if she's OK. It becomes clear very quickly that Marceline and Princess Bubblegum care for another in a deeper way; they're friends, but something else is there, too. Then, Princess Bubblegum kisses Marceline. Relationship: confirmed.

Fans couldn't hold back on Twitter about the the Marceline and Princess Bubblegum kiss. With near-universal elation, one fan wrote, "Bubbline are living the rest of their immortal lives together like in marceline's dreams THE ADVENTURE TIME FINALE SAID YOU CAN'T STOP THE GAYS."

With similar gusto, another fan wrote, "AM SO D*MN HAPPY AM CRYING I LUV ADVENTURE TIME IT JUST ENDED OMG SIMON TURNED BACK TO NORMAL MARCELINE AND BUBBLEGUM ARE BACK TOGETHER OMG OMG OMG AM CRYING THANK YOU SO MUCH ADVENTURE TIME FOR EVERYTHING."

Speaking to TV Line shortly before the finale aired, Adventure Time executive producer Adam Muto remarked that the kiss had "been an ongoing conversation," and that "it certainly wasn’t in the show’s original pitch. It was a relationship that evolved over time."

And as for what exactly the future holds for Marceline and Princess Bubblegum — there are brief glimpses of their future where it looks like they grow old together — Muto teased, "There’s enough to draw a conclusion. I don’t want to lay out their entire future — what their relationship will be like after this, and all that — but there are enough pieces there that you can kind of construct what their life will be like going forward."

Though Adventure Time has come to an end (for now), there's still plenty for the fans to celebrate about the show's important legacy, including and especially Marceline and Princess Bubblegum.

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Want more from Teen Vogue? Check this out: "Adventure Time" Showrunner Adam Muto and Olivia Olson on the Show's Legacy