The Aussie stars made a joint appearance at the Seventh International Australian Academy of Cinema and Television Awards in Los Angeles.
Grinning from ear to ear, the pair even held hands at one point as they presented on stage.
Although no longer linked, last year the couple fuelled speculation they may have been dating after sending flirty messages to each other over social media.
According to Confidential, 33-year-old Delta has been 'quietly hanging out' with rocker Matthew, with reports that the two are a 'new couple.'
The publication reveals that the pair rang in the New Year together in Hawaii, with a friend revealing: 'She's very happy right now.'
Confidential further reports Copley met Delta while they were traveling together for her national Wings of the World Tour in October and November.
In November, Copley even shared a video of he and Delta making music together, with the caption 'Create'.