Billy Ray Cyrus: 'Patrick Schwarzenegger is a good boy'

Miley Cyrus' father Billy Ray Cyrus has dismissed rumours of trouble in his daughter's relationship with Patrick Schwarzenegger, calling the model/actor a "good boy".

Arnold Schwarzenegger's son was hit with cheating allegations after he was pictured getting cosy with a female friend while on vacation in Mexico earlier this month (Mar15).

He slammed the rumours on Twitter.com, writing, "Would never do anything against my GF (girlfriend)... Girls have guy friends and guys have friends that are girls..."

His girlfriend's father Billy Ray has now spoken out to defend Schwarzenegger, telling TMZ.com, "He had fun. He's a good boy," when quizzed about the rumours.

Schwarzenegger has been dating the Wrecking Ball hitmaker since last year (14).