Robert Irwin declares his love for girlfriend Rorie Buckey as the couple share a tender moment in New York

Robert Irwin publicly declared his love for girlfriend Rorie Buckey on Monday, just months after the pair started dating.

Rorie, 19, shared a loved-up photo on Instagram of the couple sharing a tender moment while vacationing in New York City.

Irwin is all smiles in the precious photo as he cooks up a storm against the picturesque New York skyline with his girlfriend.

‘R&R version of NYC!!’ Rorie wrote next to the photo.

Robert, 19, quickly responded to the message and openly made his feelings known.

‘I love you!!’ he wrote, alongside a love heart emoji.

Robert’s mother Terri, 59, quickly joined the chorus, writing: “You two are so sweet.”

Robert and Rorie became Instagram official in August, after months of rumors that they were dating.

It comes after Rorie reportedly completed an Irwin-approved ‘wildlife warrior bootcamp’ before she and Robert became an official couple.

Woman’s Day claimed last week that Rorie had to win over the family by being willing to go out into nature.

The happy couple recently went on a crocodile research trip together, where they discovered ‘critical data’ for the Wildlife Warriors’ Worldwide foundation.

Mum Terri and sister Bindi, 25, have since been impressed by Rorie’s dedication to Australian nature.

An insider claimed Rorie was “determined not to let Robert down and to show him – and his mother and sister – that she is not just a puff piece. And she blew them away.”

Irwin and Buckey both come from famous Australian families, as Robert is the son of the late conservationist Steve ‘The Crocodile Hunter’ Irwin, while Rorie is the niece of the late Oscar-winning actor Heath Ledger.