Having met in 2007, the pair both worked for the Gold Coast Titans - Shark as a video editor and Billings as a financial manager.
A year after, Amy Cushway would release her first EP, 'I Thought of You Out Loud.' It was not until eight years later that Amy Shark would receive national recognition for her breakout single, 'Adore'.
Two years later, Billings became his wife's full-time business manager.
Speaking to The Industry Observer, Billings spoke of his managerial position, "I have always kind of co-managed Amy. Partner or not, I love her music, I love her live shows, I love the artist she is – so managing someone like Amy is the best job in the world."
Shark also spoke of her husband's immense support in a post-2018 ARIAS interview with Fairfax Media, "He – and I didn't know he was doing this – was still sending my songs to labels and managers and trying to get something happening for me even when I had called it a day."