Billy Ray Cyrus is engaged to singer Firerose after striking up a whirlwind romance when he performed with last year, it has been reported.
It comes just months after the announcement that his wife of 28 years, Tish, filed for a divorce following their third and final split.
Miley Cyrus' dad, 61, created new song New Day with last year when they took to the stage as a duo.
Billy Ray's rumoured romance is thought to be moving quickly after Firerose was spotted with a giant diamond ring, sparking further speculation the 'couple' are engaged.
"Billy is happier than he has been in a long time with Firerose," said an insider.
"There had been problems in his marriage for a while," they told The Sun. "He and Tish have been on and off for the best part of a decade, but things had been over for some time before the announcement in April.
"Not everyone sees his decision to move on so quickly in the same light though."
The source claimed there has been "some tension with Miley" but "everyone is hopeful that they will be able to get over it soon enough".
"Thankfully his other kids do not have an issue with him and he has just collaborated with his youngest, Noah, on a song," they added.
In April earlier this year, Tish and Billy Ray's divorce documents revealed they hadn't lived together for more than two years.
Tish listed "irreconcilable differences" as the reason for the split, and asked the court to equally distribute all their marital assets.
The split marks the third time that Tish and Billy Ray have called quits on their relationship.
The Achy Breaky Heart singer first filed for divorce in 2010, but changed his mind soon afterwards.
Then in 2013, it was Tish who called it quits on their relationship but the pair reconciled and ordered their lawyers to stand down.
Billy and Tish are parents to five children together.
The couple first married in 1993 in a secret ceremony as it was against the advice of Billy Ray's record company.
He went onto adopt Tish's two children from a past relationship - Brandi (born in 1987) and Trace (born in 1989).
The Mirror has contacted a representative for Billy Ray for comment.
