“Billy Ray sees the writing on the wall,” said a source. “He’s fed up with the disrespectful way Liam treats Miley by constantly flirting with other women in front of her.
“He’s had deep reservations about Liam from the start, because when Miley hooked up with him, she was the big star and he was an unknown in America.
“Billy Ray thinks Liam hitched his wagon to Miley and used her fame to turn himself into an A-list actor. He feels so strongly about it that he told Miley he’ll boycott the wedding if she goes forward with it.
“Billy Ray won’t stand by and watch Miley get her heart broken.
“He’s praying she takes his advice before she really gets hurt.”