Former Packed to the Rafters actress Ventoura and Dancing with the Stars host MacPherson, who play on-screen lovers in new TV series Wild Boys, are believed to be currently dating but still remain coy about their rumoured relationship.
Appearing together at a screening in Sydney last night, Macpherson told the Herald Sun: "It is pretty easy to see that we have on-screen chemistry - and people will obviously see that eventually change to real life."
Ventoura refused to answer questions about their alleged romance, saying: "I don't like to comment on my private life because I feel it's inappropriate."
She did, however, talk about the difference between her roles in Packed to the Rafters and Wild Boys.
Ventoura explained: "They couldn't be more different women, and that is a great example of the appeal to the role after Rafters.
"They are charting completely different courses in life but ultimately they want to care for those closest to them. She's a single woman who grew up in a very different period of our history, but she showed something of the strength of the people of those times."
Ventoura used to date Bondi Vet star Chris Brown, while Macpherson split from long-term girlfriend Kristi Townley last year.
Wild Boys premieres this Sunday.at 7.30pm on Channel Seven.
Watch a first look trailer for Wild Boys below: