Earlier this year, The Hunger Games star dismissed rumours he was officially engaged again and insisted the pair was not heading down the aisle anytime soon.
It is unclear when the reported "beach" wedding will take place, but it will most likely be a private affair, if the rumours are true.
"I just find it's easier to not talk about my personal life because usually I say the wrong thing, so it ends up just complicating things more," he told Entertainment Tonight last month.
"So, I feel like it's better not to talk about it."
However, when Miley and Liam do decide to wed they already have a volunteer lined up to officiate the ceremony - Miley's dad, Billy Ray Cyrus, who portrays a dysfunctional Elvis Presley-loving preacher in his new TV comedy Still the King.
He recently told US breakfast show Today, "They know if they need a preacher they've found one!"
- WENN