"I always needed saving", she sings.
The star, who is now promoting her sixth album Tell Me You Love Me, revealed that she hoped that by being open with her problems it could encourage others to come forward.
"I went through some tough times and went to treatment for some struggles that I had and now I've come out the other side", she shares.
The Cool for the Summer singer released the love song as a promotional single from her album of the same name, which is released on Friday (29Sep17).
Much like "Sorry Not Sorry", Tell Me You Love Me is meant to be a reflection of her true personality, whether it's fun or emotional. But I don't owe anybody anything.
She even sent a copy of the tune to the song's subject, and it turned out that person had written a track about their feelings too. Especially since the singer spoke with People earlier this year about how the album reflects her life over the past year-and-a-half.
One fan tweeted: 'demi and nick having feelings for each other is a plot twist I could've never expected f*** got and greys anatomy this is the kind of drama that has me shook in 54 languages'. "But now I'm fuckin' lonely and you didn't want me". It wasn't soulful; I wasn't getting into the songs. And so I did, and sent [the songs] to that person, and that was.
She doesn't hold back in writing songs about love, sex, and her past battles with substance abuse, with the ballad You Don't Do It for Me Anymore about her struggles with addiction.
"Demi said we're gonna know who a song is about and Ruin The Friendship opens with a line about a cigar and guitar uh", @thehalfbloodlex posted alongside shots of Jonas holding a stogy and the acoustic instrument.