Demi was vocal in her support of marriage equality (Mike Coppola/Getty)

Demi Lovato has revealed that she is open to dating women.

The singer was speaking on the red carpet during the launch of her documentary, Demi Lovato: Simply Complicated.

The hard-hitting film explores Demi’s struggles with drugs, alcohol and an eating disorder, as well as her sexuality.

At one point during the documentary, the audience hears how “Demi was on a road to suicide” during a particularly turbulent period of the 25-year-old musician’s life.

Demi had also told fans that if they wanted to know more about her sexuality, they should watch the film.

And then she addresses a question which many of her supporters have been wondering about.

During its launch, the global megastar was asked by US show ExtraTV about the revelations contained within the documentary.

The interviewer says: “I know you talk at the end about being on dating apps and relationships, and I love what you said – that you’re looking for a human connection, and that doesn’t discriminate (between) men or women.

“When did you come to that realisation?” she asked the singer.

With a huge smile on her face, Demi replied: “That’s how I’ve always felt.”

She did not label herself, so neither will we.

The superstar, who revealed that she has now been sober for more than five years, also praised all those coming forward to speak about their experiences with Harvey Weinstein.

Cara Delevingne was one of those who have spoken out, saying Weinstein had talked to her in an “inappropriate” way and told her she would have no future in Hollywood if she was open about her sexuality.

“I think that it’s very brave,” Demi said.

“I think it’s very important that people stand up for themselves and speak out about these issues, because it just gives people at home, people who don’t have a voice, the courage to step forward with things that happened to them as well.”

She also spoke about a moment in her life covered during the film, when she punched a backup dancer on a plane – an incident which led her to seek professional help.

“I wish I didn’t do that, but I take full responsibility for it in this film,” she said.

The Sorry Not Sorry singer added that she had been through “a few” rock bottom moments.

“But I’ve picked myself up every time,” she said, adding that “in the film, it showcases every single time that I’ve picked myself back up and made changes to grow.”

New rumours about Demi’s sexual orientation surfaced after she was spotted holding hands with another woman last month.

The woman who she was getting close to at Disneyland in Los Angeles was reported to be Lauren Abedini, a DJ and producer.

This excited fans, but Lovato has always resisted attempts to label her sexual orientation.

The singer has told People: “It’s something I don’t think needs to have a label: As humans, It’s just about a connection with someone.”

Demi has also been reluctant to open up about the lyrics to her song Cool for the Summer, which many say has Sapphic undertones.

The song’s lyrics include: “Got a taste for the cherry / I just need to take a bite”, and “I’m a little curious, too / tell me if it’s wrong, if it’s right / I don’t care / I can keep a secret, can you?”

When Alan Carr asked whether the song was about same-sex relationships, Lovato said: “I’m not confirming, and I’m definitely not denying.”

And when questioned about her sexuality during an interview with PrideSource.com, Demi replied: “I just feel like everyone’s always looking for a headline and they always want their magazine or TV show or whatever to be the one to break what my sexuality is.

“I feel like it’s irrelevant to what my music is all about.

“I stand up for the things that I believe in and the things that I’m passionate about, but I like to keep my personal life as private as possible when it comes to dating and sexuality and all that stuff just because it has nothing to do with my music.”

Many of her supporters – known as Lovatics – would love for her to come out as proudly part of the LGBT community, which she has repeatedly embraced in the past.

However, this doesn’t mean they want her to come out against her will.

The strength and understanding present in their support was demonstrated when HuffPost called Demi’s reasons for not publicly talking about her sexuality “total bulls***.”

One reader labelled the article “so gross”, adding: “a young queer person literally doesn’t need to openly come out, celebrity or not, if they don’t want to.”

Another said: “Reality check: no one, at any time or for any reason, owes another person any god damn thing when it comes to their sex life.”

Among the hundreds of comments, it was hard to find a single one in support of the article.

Readers seemed to share a similar viewpoint: no one is obliged to reveal their sexuality or come out, regardless of whether they are in the public eye or not.

One commenter even called for the article to be taken down, labelling it “utter bulls***.”

Watch Demi’s interview here: