Adding fuel to the fire, Andy has been liking comments from fans about the possibility of the couple being secretly engaged.
One comment he liked read: "Guys, they'll get married if they want, stop pressuring them. Separately Andy, where's the ring? C'mon, bro."
However, this isn't the first time the couple has sparked engagement rumours thanks to an unfortunate photo crop. While on holiday in New Zealand last year, Harding posted a sweet selfie in which her left had was just out of view from the photo, which many believed at the time had been done on purpose.
Andy and Bec have been dating for four years, after first meeting at a café where she worked in 2015.
This article originally appeared on marie claire Australia.