Miley Cyrus' on-again, off-again fiancé Liam Hemsworth was spotted “locking lips with a random brunette" at a Toronto Film Festival bash, later leaving the party with her, Breaking Celebrity News has learned.

Liam, a source told the NY Post, was spotted in the embrace on Saturday, during a party at the Bungalow 8 club at Toronto's Thompson Hotel. The source added, "They left together."

The report adds fuel to growing speculation the Aussie A-lister, humiliated by Miley's racy grinding on Robin Thicke at the VMAs,