AceShowbiz - When Billie Eilish says she's a huge fan of Justin Bieber, she's not kidding. The "Bad Guy" hitmaker recently made an appearance in the finale of Justin's YouTube docuseries "Seasons", in which she expressed her love for the Canadian heartthrob.

During her one-on-one interview, Billie shared that she's always excited for everything that Justin puts out. "Anything that he makes at all, I'm excited about," the Grammy-winning songstress added.

She further made her points with a rather gross hypothetical situation. "I don't care if he pooped and put it on a plate and put that in a store. I'm excited! Anything that Justin makes, I'm ready to go," Billie said in the final episode, titled "The Finale", which premiered on Tuesday, February 25.

"I would say that he's doing better and that makes me so happy because, you know, I like, care about him more than, like, anyone in my life," Billie continued. "The fact that he's just moving forward and going, and going, and going, is huge. I think it's bigger than all of us even realize because it's easy to stop."

In addition to Billie, the finale featured conversations with Quavo, Justin's mentor Usher, Big Sean and DJ Khaled among others. It also showed a longtime fan of Justin named Lindsey, who was chosen as the "One Less Lonely Girl" from Bieber's 2011 concert film, "Never Say Never".

Justin could be seen surprising her before they adorably reminisced about the first time they met and about how much they've grown up. "Once a Belieber, always a Belieber," Lindsey noted.