They shared an intimate image on social media a couple of days ago.
"#Onyourside @jessicaveronica .... stay tuned ..." read the caption below the image of the pair lying on the bed together in their underwear.
The Veronicas singer confirmed the relationship to NovaFM last week - explaining that their romance was rekindled when Rose directed the video clip for The Veronicas’ new single On Your Side.
The romance has prompted a wave of media coverage, and comes as the singers are in the midst of a promotional tour for their new album.
Some media outlets are speculating that the image a still from the new single.
Earlier this week, Rose released a preview of the song on Instagram.
Last week Origliasso revealed to NovaFM that: "We have been friends for eight years. A really long time and it was just honestly the craziest thing. We just reconnected over doing this video, she wrote and directed it, and is in it with us and we just sort of fell in love."
“We support each other in our careers and we support one another and be there. It made sense to be able to come out on that level because we want to be there in each other’s lives on a public level.
“We’ve been friends for eight years. We just reconnected over doing this video. We sort of just fell in love. It’s pretty cute, honestly," she said.