Other clues that lead fans to believe that Cody is about to take part include:
Clue: “I was created by the digital age.”
Cody was discovered on YouTube by a Grammy-award winning producer, Sean Campbell.
Here's a few more:
“Growing up, I was surrounded by gold."
He was born on the Gold Coast to Brad and Angie Simpson, before relocating to Los Angeles in June 2010 to record music.
Clue: “I really care about the real world” AND “I’ve always been connected to the water.”
In June 2017, he was named the first United Nations Development Programme advocate for oceans.
Clue: "I headed East like a moth to a flame, but I soon realised others were controlling my program. I felt like such a clone! So I short-circuited the production line and I'm now very much my own robot."
He moved to America in 2010 to boost his career, but in 2014, he left his record-label, Atlantic Records, due to creative differences.
The 26-year-old singer feels like she was "slut shamed" for moving on after her split from her Australian actor husband, Liam Hemsworth, and most recently Kaitlynn Carter, ex-wife of Brody Jenner.
Miley also joked that Cody ticked off all the boxes on her list: he's 22, Australian aka her "type" and he has abs - can you blame the gal?
WATCH: Cody Simpson says he's been in love with Miley Cyrus for YEARS