Simone Holtznagel slips her tongue into her boyfriend Jono Castano’s mouth at Versace event

They are enjoying a hot and heavy romance after debuting their relationship just months ago.

And Simone Holtznagel and her boyfriend Jono Castano couldn’t keep their hands or lips off one another at exclusive Versace event in Sydney on Thursday night.

The model slipped her tongue into the hunky personal trainer’s mouth as they sat at the dinner table.

Simone shared the PDA on her Instagram stories, as well as videos of her and her fashionable friends arriving at the event.

The blonde bombshell looked incredible on the night, wearing a sparkly snakeskin print mini dress and sky-high heels by Versace.

She had her platinum locks tied back in a tight ponytail to reveal a pair of large diamond stud earrings.

The model slipped her tongue into the hunky personal trainer’s mouth as they sat at the dinner table

Simone and Jono went public with their relationship in May when they were spotted dining in Sydney’s eastern suburbs. 

Earlier this month, the celebrity personal trainer and the Playboy cover girl were living their best lives when they stripped off and enjoyed a steamy hot tub in New Zealand.

In footage shared to Instagram, Simone, 29, and Jono, 31, turned up the heat as they slipped their genetically blessed physiques into one of Queenstown’s famous onsen pools.

Earlier this month, the celebrity personal trainer and the Playboy cover girl were living their best lives when they stripped off and enjoyed a steamy hot tub in New Zealand  

Simone appeared to be topless in the great outdoors as she snuggled up to her hunky man, while storm clouds brewed in the distance. 

The couple’s sexy display comes after Simone happily posed in her ‘birthday suit’ to celebrate turning 29. 

Sharing an image to Instagram, she looked nothing short of sensational as she posed in a Siya Slice Gather Dress in black designed by label By Johnny. 

In footage shared to Instagram, the couple turned up the heat as they slipped their genetically blessed physiques into one of Queenstown’s famous onsen pools

Simone allowed her famous long locks to cascade down her back in the photo, and kept her makeup palette ultra-glam with a smokey eye and lashings of mascara. 

Simone and Jono have been surprisingly tight-lipped about their romance aside from a handful of social media posts.

They couple confirmed their romance in May when they were seeing locking lips at a Mimi’s in Coogee. 

Simone Holtznagel sizzled as she struck a pose in her ‘birthday suit’. Sharing an image to Instagram, she looked nothing short of sensational as she posed in a Siya Slice Gather Dress in black designed by label By Johnny

Mimi’s is a celebrity hotspot owned by Justin Hemmes, who is dating Simone’s sister Madeline.

Their relationship comes after Jono’s split with wife Amy.

The pair remain on good terms and still co-own Acero gym in Sydney.

Their relationship comes after Jono’s split with wife Amy. Pictured: Simone and Jono