Johnny Ruffo and his girlfriend Tahnee Sims are currently vacationing on the Great Barrier Reef to celebrate the blonde beauty's 25th birthday.
The couple, who have been dating for several years, have been sharing their adventure on social media - with Tahnee posting a series of sizzling bikini snaps in a hot pink one piece.
Ruffo also took to the social media platform to share a sweet message to his partner on her birthday.
He wrote, "Happy Birthday to the most amazing, beatiful, kind hearted girl i know, you make me want to be a better person and i am lucky enough to call you mine, happy 25th birthday babe xxx"
In July this year, during an appearance on Studio 10, Johnny revealed he had another three months of cancer treatment to go.
"I've got a little bit of chemo left to do, I've got about three months left," the former Home And Away star said.
Panellist Joe Hildebrand asked the actor whether the treatment was "debilitating", to which he replied, "There are days where you feel like absolute garbage and you just want to lie in bed and do nothing, and that's what I do."