The pair reportedly had a fling during the early seasons of The Voice before Darren found love with Teen Wolf star Crystal Reed.
But with Darren – who is now single – back in Australia to film the renewal of series SeaChange for the Nine Network, will he and Delta, 34, see each other again?
“Delta and I speak a lot,” Darren reveals to New Idea, before saying she is “very much in love”.
Despite trying to keep their fling hidden, Darren and Delta were spotted kissing at a Lady Gaga concert in 2012. When questioned about it, Darren insisted they were “never in a confirmed relationship” but had “remained good friends”.
Recently, the TV presenter also confessed to New Idea his love-life was “non-existent”, saying he prefers to focus on his work.
Darren will be playing marine biologist Findlay Knox in the new season of SeaChange. He admits there was a lot of pressure to be a new player in an already very popular show.