Liam Hemsworth and Miley Cyrus have postponed their wedding.

The couple had originally planned to tie the knot this summer but after a series of difficulties, including Liam allegedly flirting with other women and Miley's wild partying, they have decided to work on their relationship before making the huge commitment.

A source told People magazine: ''They want to figure out their life together before they get married.

''They're still engaged and living together. They just think that there is no rush with the wedding and that it's better that they wait a bit.

''They were never in a rush to get married.''

Miley's dad Billy Ray Cyrus recently admitted he doesn't know if the wedding is going ahead.

When asked if they will get married, he said: ''I don't know. I know as I was writing a book, I wanted to keep that particular moment [Miley's wedding] as open-ended as possible. I didn't know the answer.''

However, Billy Ray insists Miley, 20, and 23-year-old Liam are still ''great friends''.

He added: ''They're young, they're kids, the great news is they;re great friends, they're really good friends.

''I play it by ear, I know whatever's meant to be that's the way it's going to happen.''