"Everyone always thinks Miley is problematic and immature and a hardcore partier while he's this chill surfer dude, but that's actually [not accurate]", a source told PEOPLE.
"Once upon it was paradise / Once upon a time I was paralysed / I think I'm gonna miss these harbour lights / But it's time to let it go", the 26-year-old sings in an audio clip released on her Vevo account.
"Miley is okay, but you can tell she isn't 100 percent happy", the source says, adding that "she hasn't talked to Liam" since after her rep said 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".
"Once upon a time it was made for us / Woke up one day and it turned to dust / Baby, we were found, but now we're lost / So it's time to let it go", she sings.
"Move on, we're not seventeen, I'm not who I used to be, You say that everything's changed, You're right, we're grown now".
All Flights Cancelled Out Of Hong Kong Airport Amid Democracy Protests
Riot police use pepper spray against protesters during the anti-extradition bill protest in Hong Kong, Sunday, Aug. 11, 2019. The airport earlier cancelled all remaining departing flights for the second day after protesters took over the terminals .
"Liam's heartbroken, and his family can not believe she is flaunting this for the world to see", says an insider.
With both Carter and Cyrus having split from their husbands, a lavish getaway in Europe soaking up some sun with awesome views was just what they needed.
This is the second breakup song Miley Cyrus has released about Liam Hemsworth.
"Miley was asking for a break and wanted to soul search and came to the realization she was unhappy", the source said.
Liam spends a ton of time at the beach and loves to surf. Is this how she's telling him it's over and not just temporarily over? The two ended their engagement and broke up a year later, before reconciling in 2015.
They got engaged again in 2016 and tied the knot in a surprise ceremony last December. The couple split earlier this month - and revealed they were never legally married.