15 Things Even the Most Hardcore Lovatics Might Not Know About Demi Lovato

Her favorite self-care routine is getting her nails done. "It sounds silly, but if I go weeks without getting my nails done, I must find an hour to get a manicure," she has said. "It just makes me feel better."

She met future long-term boyfriend Wilmer Valderrama (whom she now calls her "best friend in the world") at a PSA shoot at his home for Voto Latino in 2010. "I was like 'Oh, my God, this guy is so attractive' . . . we just started talking." Check out the couple's most adorable snaps!

Growing up, she was a Selena fan — especially after seeing the movie about the Tejano singer's life. Oh, you thought we meant the other Selena?

Her mom, Dianna, is a former Dallas Cowboys cheerleader.

The one place in the world she's never been but still wants to visit is Fiji. "I want to go so bad!" she told the British talk show This Morning in 2014.

Her favorite ice cream is chocolate chip cookie dough.

She struggled with bullying in middle school, so much so that she decided to be homeschooled — but in an epic "Bye, haters!" move, she worked so hard that she graduated high school a year early.

She vacationed in Park City, UT, for New Year's Eve last year with Jennifer Lopez. "To wake up and she's in her sweats with no makeup and still looks flawless, you're kind of like, 'What the f*ck? You're not even human,'" Demi told Complex in its October/November 2015 issue. "But she's so real and chill. I love her to death."

She met BFF Iggy Azalea last year at Jennifer Lopez's Halloween party. The pair are so close that Demi is going to be a bridesmaid in the Australian rapper's upcoming wedding and was even present for the proposal.

Demi had her Sweet 16 at Applebee's. True story!

To overcome her fear of sharks, she swam with them. She and Wilmer dove with black tip sharks in Bora Bora in 2014. (Not to worry — Demi says black tip sharks don't eat humans.)

She was Miss Mini Texas in 2000.

Her great-great-great-grandfather Francisco Perea was a member of the Congressional Delegation from the State of New Mexico.

She might have sang "Let It Go" for Frozen, but Cinderella is her favorite Disney princess. She's also very aware of the weird stories surrounding the animated characters. "Take Ariel," she wrote in a 2013 BuzzFeed post. "She's 16 years old. Gave up her identity. Married a guy that she didn't know and had never had a conversation with only three days after meeting him!"

She goes ghost hunting and even has a personal, spooky ghost story.