Miley Cyrus and Patrick Schwarzenegger are reported to be "as good as engaged".

The singer only started dating Arnold Schwarzenegger and ex-wife Maria Shriver's son last November, but wants to elope because she thinks she has found "The One."

A source close to the 22-year-old singer told America's OK! magazine: "Miley is telling everyone she's found The One. And he's totally under her spell. They're as good as engaged."

Patrick's mother is allegedly still "urging" him "to end things" with the blonde beauty, as she and Arnold "don't like Miley's party-girl image".

But the insider added: "Miley knows that it won't work with his family. But she's madly in love and told Patrick they should run off to a tropical island and even Las Vegas and take the plunge, just the two of them. Miley pretty much sets the agenda in the relationship."