If you didn’t know that Billie Eilish is a huge admirer of Justin Bieber, then you will know it for sure after you watch Billie Eilish: The World’s A Little Blurry.

Directed by R. J. Cutler, the new Billie Eilish documentary—which began streaming on Apple TV+ on Friday—takes fans behind the scenes of Eilish writing her debut, Grammy-winning studio album alongside her brother Finneas O’Connell in their childhood home in 2018, as well as on the road with Eilish to her very first Coachella performance. But the most touching moment of the film is not about Eilish and her music, but rather the moment she meets her childhood idol.

Also Read: Billie Eilish says she was “Really, Really Depressed” as a Young Teen

As Eilish explains to a radio talk show host, she was fully obsessed with Justin Bieber when she was 12-years-old, as were so many 12-year-old girls across the nation. She knew everything about him, right down to the minute he was born. So when Bieber reaches out to Eilish not only to collaborate but to meet, you can hardly blame the then 17-year-old for losing her cool.

The two musicians meet among the crowd at Coachella, with Cutler and his film crew capturing the moment. At first, Bieber just looks at Eilish intently. Then, finally, they hug.

But their story just doesn’t end here. After they meet, Bieber sends Eilish a heartfelt message of gratitude and encouragement, which she reads out loud for the camera. It’s so sweet and genuine, that it’s hard to not get emotional on seeing it.

These are the contents of the letter that Eilish reads out in the documentary:

“It’s moments like tonight where I’m reminded what I mean to people. Your love for me touched my heart. You are so special, not for what you can do, but for who you are. Remember that. I am so impressed by your aura and presence. You carry a heavy calling. You are an idol to so many. I’m excited to watch you flourish. You are beyond special. Thank you for tonight. It meant just as much to me as it meant to you. I also want to let you know that it feels like yesterday I was 15 singing “One Time,” and now I’m 25, and that was 10 years ago. It flew by like a flash. Enjoy every minute of what you are experiencing. Embrace it all, believe you are great, but not greater than anyone.”

Eilish’s The World’s A Little Blurry documentary is out now, so you can catch it on Apple TV+ to get the full behind-the-scenes action.

Also Read: Justin Bieber Announces New Album