Since photos of the pair getting frisky on a yacht in Italy surfaced, a source close to Liam claims he's "heartbroken" his ex of nearly a decade is flaunting her new romance so soon after they announced their separation.
“Liam’s heartbroken, and his family cannot believe she is flaunting this for the world to see,” an insider close to the former couple told Radar Online, adding The Hunger Games actor's family, “thinks she’s a disgrace.”
According to the insider, Miley “was the one to end" their seven-month-long marriage after revealing to Liam "she wanted an open relationship" and "wasn’t ready for just one person for forever.”
Brody Jenner has also weighed in on their strange hookup, posting a photo of himself in Malibu, California on social media with the caption, "Don’t let yesterday take up too much of today."
Brandon Thomas Lee, Pamela Anderson and Tommy Lee's son was quick to make a joke in the comments section saying: "Let's round this scandal out and post a pic of us making out," with the kissy-face emoji.
Brody responded, "@brandonthomaslee watch out! Pics of Liam and I holding hands on the beach coming soon," along with the emoji of two men.
Well, Miley clearly had wifi on the boat, because she was the first to clap-back at Brody. "@brodyjenner go take a nap in your truck and cool off #HotGirlSummer."
Less than a year after the Aussie actor and American singer tied the knot in an intimate ceremony in Franklin, Tennessee, the pair announced in a statement that they'd decided to go their separate ways.
“Liam and Miley have agreed to separate at this time,” a rep for the "Mother's Daughter" hitmaker told PEOPLE in a statement. “Ever-evolving, changing as partners and individuals, they have decided this is what’s best while they both focus on themselves and careers. They still remain dedicated parents to all of their animals they share while lovingly taking this time apart. Please respect their process and privacy.”
Rumours of a split spread like wildfire late last week when Miley, who recently returned to acting to star in Black Mirror, was photographed without her wedding ring while enjoying her vacation in Italy with Kaitlynn Carter— a trip which took place less than a week after Kaitlynn confirmed she and Caitlyn Jenner's son had called it quits.
Since news broke yesterday that they'd called it quits, Miley returned to social media, posting a photo to Instagram and Twitter with a message about the importance of protecting the environment.
She later posted another photo from her stunning trip with the caption, "Life's a climb... but the view is great."