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

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

Nobel! Simone Holtznagel slips her tongue into boyfriend Jono Castano’s mouth at an exclusive Versace event in Sydney

They are enjoying a hot and heavy romance, having debuted their relationship just a few months ago.

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

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

Simone Holtznagel and boyfriend Jono Castano couldn’t keep their hands or lips off each other at the exclusive Versace event in Sydney on Thursday night

Simone shared the PDA on her Instagram Stories, as well as videos of her and her fashion forward friends arriving at the event.

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

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

The model slipped her tongue into the handsome personal trainer's mouth as they sat at the dining table

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

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

Earlier this month, the celebrity personal trainer and Playboy cover girl were living their best as they stripped naked 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 bodies into one of Queenstown’s famous onsen pools.

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

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

Simone appeared topless in the great outdoors as she snuggled up to her handsome husband as storm clouds brewed in the distance.

The leggy beauty had her hair tied back for the occasion as they embraced tenderly at the therapeutic spa.

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

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

In pictures, the couple turned up the heat as they slipped their genetically blessed bodies into one of Queenstown's famous onsen pools

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

Simone let her famously long locks fall down her back in the photo, keeping her makeup palette ultra-glam with a smoky eye and mascara.

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

The pair confirmed their romance in May when they caught lips at a Mimi in Coogee.

Simone Holtznagel sizzled as she posed in her 'birthday suit'.  Sharing a picture on Instagram, she looked nothing short of sensational as she posed in a black Siya Slice Gather Dress designed by label By Johnny

Simone Holtznagel sizzled as she posed in her ‘birthday suit’. Sharing a picture on Instagram, she looked nothing short of sensational as she posed in a black Siya Slice Gather Dress 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 from wife Amy.

The couple remain on good terms and are still co-owners of the Acero gym in Sydney.

Their relationship comes after Jono's split from wife Amy.  Pictured: Simone and Jono

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