She explained: "I really needed to fall apart in that sort of reckless 20s way. "To not care about looking put-together every waking moment of my life or saying the wrong things as a role model to children." Billie came to prominence as a singer at age 15 with her single Because We Want To, before later starring in Doctor Who, and Secret Diary of a Call Girl.
Billie said her early relationships were fuelled by an "extreme desire to feel loved and safe" coming from spending a lot of time alone as a child. "I've (since) learned about attachment issues and co-dependency, which I never saw as a problem, until I did that work on myself," she revealed.
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