They met when they both went for an audition for 'Barney & Friends.' 1
How adorable were they?!
They were both born to be superstars. 2
They look so tiny and cute. Our hearts!
They used to film adorable YouTube videos together. 3
Selena's haircut was so edgy then.
Check their cute video below. 5
Sel knew just how to make Demi laugh.
Their love for each other made everyone else fall in love with their friendship. 6
Fans loved them so much, they even coined the term "Delena" as their friendship nickname.
Who wouldn't love these two? 7
They both were so happy and full of life at the starts of their careers, and their energies were infectious.
They went back to being costars on 'Princess Protection Program.' 8
They both starred in the Disney Channel movie in 2009 and they were perfect as costars.
The girls even filmed a music video for the movie. 9
They recorded the song "One and the Same" for the movie and looked like they had so much fun filming the video.
Of course, they took the opportunity to be goofy. 11
What's a friend reunion if you can't share some laughs together?
As they got older, they were also spotted out and about. 12
They were spotted out on the town after having dinner together, a sign that they were all grown up.
This pic of them is too precious for words. 13
Their friendship truly does go all the way back.
They were all grown up at a fashion event together. 14
They reunited on the red carpet for the 2017 InStyle Awards and fans went absolutely crazy over the fact that they had posed for pics with each other.
When Demi was a judge on 'The X Factor,' Selena was one of the guest performers. 15
The pair snapped a pic backstage and Sel captioned it: "It's just the evidence of forever. No matter what @ddlovato."
All besties are pros at taking silly selfies. 16
This pic from a reunion the girls had in 2015 is proof.
Selena has been there for Demi in the past. 18
After Demi sought treatment for her addicitons in 2010, she said Selena had been super supportive. "Fortunately, I have family and friends around me that are very, very supportive of me and my recovery… Nick [Jonas] especially and Selena because Selena called me crying when I was in there and was just so worried," she said at the time. "I was like 'Look, I should be the one crying. It's all good.'…Ever since then, we've gotten closer."
It's incredible that they've grown up by each other's side. 19
It would be a shame to watch them throw their friendship away.
We could all use a friend who makes us smile this BIG. 20
They always looked like they were having the best time when they were together.